├── .github ├── CODEOWNERS ├── ISSUE_TEMPLATE.md ├── PULL_REQUEST_TEMPLATE.md └── workflows │ └── main.yml ├── .gitignore ├── CONTRIBUTING.md ├── Chapter1 ├── 01_01 │ └── cookies.html ├── 01_02 │ ├── cookies.html │ └── cookies.js ├── 01_03 │ ├── queryall.html │ └── queryall.js ├── 01_04 │ ├── queryall.html │ └── queryall.js ├── 01_05 │ ├── queryall.html │ └── queryall.js └── 01_06 │ ├── queryall.html │ └── queryall.js ├── Chapter2 ├── 02_01 │ ├── prettyparse.html │ └── prettyparse.js ├── 02_03 │ ├── prettyparse.html │ └── prettyparse.js ├── 02_04 │ ├── prettyparse.html │ └── prettyparse.js ├── 02_05 │ ├── prettyparse.html │ └── prettyparse.js ├── 02_06 │ ├── prettyparse.html │ └── prettyparse.js ├── 02_07 │ ├── prettyparse.html │ └── prettyparse.js ├── 02_08 │ ├── prettyparse.html │ └── prettyparse.js └── 02_09 │ ├── prettyparse.html │ └── prettyparse.js ├── Chapter3 ├── 03_03 │ ├── prettyparse.html │ └── prettyparse.js ├── 03_04 │ ├── prettyparse.css │ ├── prettyparse.html │ └── prettyparse.js ├── 03_05 │ ├── prettyparse.css │ ├── prettyparse.html │ └── prettyparse.js ├── 03_06 │ ├── prettyparse.css │ ├── prettyparse.html │ └── prettyparse.js ├── 03_07 │ ├── prettyparse.css │ ├── prettyparse.html │ └── prettyparse.js ├── 03_08 │ ├── prettyparse.css │ ├── prettyparse.html │ └── prettyparse.js └── 03_09 │ ├── prettyparse.css │ ├── prettyparse.html │ └── prettyparse.js ├── LICENSE ├── NOTICE └── README.md /.github/CODEOWNERS: -------------------------------------------------------------------------------- 1 | # Codeowners for these exercise files: 2 | # * (asterisk) deotes "all files and folders" 3 | # Example: * @producer @instructor 4 | -------------------------------------------------------------------------------- /.github/ISSUE_TEMPLATE.md: -------------------------------------------------------------------------------- 1 | 7 | 8 | ## Issue Overview 9 | 10 | 11 | ## Describe your environment 12 | 13 | 14 | ## Steps to Reproduce 15 | 16 | 1. 17 | 2. 18 | 3. 19 | 4. 20 | 21 | ## Expected Behavior 22 | 23 | 24 | ## Current Behavior 25 | 26 | 27 | ## Possible Solution 28 | 29 | 30 | ## Screenshots / Video 31 | 32 | 33 | ## Related Issues 34 | 35 | -------------------------------------------------------------------------------- /.github/PULL_REQUEST_TEMPLATE.md: -------------------------------------------------------------------------------- 1 | 2 | -------------------------------------------------------------------------------- /.github/workflows/main.yml: -------------------------------------------------------------------------------- 1 | name: Copy To Branches 2 | on: 3 | workflow_dispatch: 4 | jobs: 5 | copy-to-branches: 6 | runs-on: ubuntu-latest 7 | steps: 8 | - uses: actions/checkout@v2 9 | with: 10 | fetch-depth: 0 11 | - name: Copy To Branches Action 12 | uses: planetoftheweb/copy-to-branches@v1 13 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | .DS_Store 2 | node_modules 3 | .tmp 4 | npm-debug.log 5 | -------------------------------------------------------------------------------- /CONTRIBUTING.md: -------------------------------------------------------------------------------- 1 | 2 | Contribution Agreement 3 | ====================== 4 | 5 | This repository does not accept pull requests (PRs). All pull requests will be closed. 6 | 7 | However, if any contributions (through pull requests, issues, feedback or otherwise) are provided, as a contributor, you represent that the code you submit is your original work or that of your employer (in which case you represent you have the right to bind your employer). By submitting code (or otherwise providing feedback), you (and, if applicable, your employer) are licensing the submitted code (and/or feedback) to LinkedIn and the open source community subject to the BSD 2-Clause license. 8 | -------------------------------------------------------------------------------- /Chapter1/01_01/cookies.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | Granny's Chocolate Chip Cookies 6 | 9 | 10 | 11 | 16 | 17 | 18 |

Granny's Chocolate Chip Cookies

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The trick to great cookies is getting the butter to the right 20 | consistency. Soft, but not melted. Cream the butter and two sugars, 21 | mix in the egg, vanilla, baking soda, water, and salt. 22 |

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Last of all, mix in the flour slowly, so there are no lumps or unmixed 24 | flour in your dough. Mix in the chocolate chips, then use two spoons 25 | to drop dough on an ungreased cookie sheet. 26 |

27 |

Bake at 190°c, and use your eyes and nose to know when they're 28 | done. Final step: enjoy! 29 |

30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 |
IngredientAmountg
Butter100
Sugar (granulated white)140
Brown sugar (dark or light, packed)40
Egg (fresh)44
Vanilla Extract5
Baking soda4
Water6
Salt (table)3
All-Purpose Flour151
Chocolate Chips150
81 | 82 | 83 | -------------------------------------------------------------------------------- /Chapter1/01_02/cookies.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | Granny's Chocolate Chip Cookies 6 | 9 | 10 | 11 | 24 | 25 | 26 |

Granny's Chocolate Chip Cookies

27 |

The trick to great cookies is getting the butter to the right 28 | consistency. Soft, but not melted. Cream the butter and two sugars, 29 | mix in the egg, vanilla, baking soda, water, and salt. 30 |

31 |

Last of all, mix in the flour slowly, so there are no lumps or unmixed 32 | flour in your dough. Mix in the chocolate chips, then use two spoons 33 | to drop dough on an ungreased cookie sheet. 34 |

35 |

Bake at 190°c, and use your eyes and nose to know when they're 36 | done. Final step: enjoy! 37 |

38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 |
IngredientAmountg
Butter100
Sugar (granulated white)140
Brown sugar (dark or light, packed)40
Egg (fresh)44
Vanilla Extract5
Baking soda4
Water6
Salt (table)3
All-Purpose Flour151
Chocolate Chips150
Walnuts150
Total Weight:
97 | 98 | 99 | 100 | 101 | -------------------------------------------------------------------------------- /Chapter1/01_02/cookies.js: -------------------------------------------------------------------------------- 1 | document.addEventListener('DOMContentLoaded', () => { 2 | const ingredients = document.getElementById('ingredients'); 3 | 4 | let total = 0; 5 | 6 | Array.prototype.forEach.call(ingredients.children, (tr) => { 7 | const td = tr.children[1]; 8 | 9 | if (tr.id == 'totals') { 10 | td.innerText = total; 11 | } else { 12 | const weight = parseFloat(td.innerText); 13 | 14 | total += weight; 15 | } 16 | }); 17 | }); 18 | -------------------------------------------------------------------------------- /Chapter1/01_03/queryall.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | QueryAll 8 | 9 | 10 | 11 | 25 | 26 | 27 |
28 |

QueryAll - querySelectorAll() Demo

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querySelectorAll('');
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46 | 47 | 48 | 49 | -------------------------------------------------------------------------------- /Chapter1/01_03/queryall.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | document.forms.queryall.addEventListener('submit', (e) => { 11 | e.preventDefault(); 12 | 13 | refreshQuery(e.target.selector.value); 14 | 15 | return false; 16 | }); 17 | 18 | refreshOutput(textarea.value); 19 | }); 20 | 21 | function refreshOutput(html) { 22 | const output = document.querySelector('#output'); 23 | 24 | output.innerHTML = html; 25 | } 26 | 27 | function refreshQuery(selector) { 28 | const output = document.querySelector('#output'); 29 | const matches = document.querySelector('#matches'); 30 | 31 | matches.innerHTML = ''; 32 | 33 | output.querySelectorAll(selector).forEach((el) => { 34 | const li = document.createElement('li'); 35 | li.innerText = el.outerHTML; 36 | 37 | matches.appendChild(li); 38 | }); 39 | } 40 | -------------------------------------------------------------------------------- /Chapter1/01_04/queryall.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | QueryAll 8 | 9 | 10 | 11 | 25 | 26 | 27 |
28 |

QueryAll - querySelectorAll() Demo

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querySelectorAll('');
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48 | 49 | 50 | 51 | -------------------------------------------------------------------------------- /Chapter1/01_04/queryall.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | document.forms.queryall.addEventListener('submit', (e) => { 11 | e.preventDefault(); 12 | 13 | refreshQuery(e.target.selector.value); 14 | 15 | return false; 16 | }); 17 | 18 | document.forms.queryall.addEventListener('click', (e) => { 19 | if (e.target.tagName != 'BUTTON') { 20 | return; 21 | } 22 | 23 | switch (e.target.innerText) { 24 | case 'delete': { 25 | deleteMatches(); 26 | } break; 27 | 28 | case 'textify': { 29 | textifyMatches(); 30 | } break; 31 | } 32 | }); 33 | 34 | refreshOutput(textarea.value); 35 | }); 36 | 37 | function refreshOutput(html) { 38 | const output = document.querySelector('#output'); 39 | 40 | output.innerHTML = html; 41 | } 42 | 43 | function refreshQuery(selector) { 44 | const output = document.querySelector('#output'); 45 | const matches = document.querySelector('#matches'); 46 | 47 | matches.innerHTML = ''; 48 | 49 | output.querySelectorAll(selector).forEach((el) => { 50 | const li = document.createElement('li'); 51 | li.innerText = el.outerHTML; 52 | 53 | matches.appendChild(li); 54 | }); 55 | } 56 | 57 | function deleteMatches() { 58 | const output = document.querySelector('#output'); 59 | 60 | const selector = document.forms.queryall.selector.value; 61 | 62 | output.querySelectorAll(selector).forEach((el) => { 63 | el.parentElement.removeChild(el); 64 | }); 65 | 66 | refreshQuery(selector); 67 | } 68 | 69 | function textifyMatches() { 70 | const output = document.querySelector('#output'); 71 | 72 | const selector = document.forms.queryall.selector.value; 73 | 74 | output.querySelectorAll(selector).forEach((el) => { 75 | const text = document.createTextNode(el.innerText); 76 | el.parentElement.replaceChild(text, el); 77 | }); 78 | 79 | refreshQuery(selector); 80 | } 81 | -------------------------------------------------------------------------------- /Chapter1/01_05/queryall.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | QueryAll 8 | 9 | 10 | 11 | 25 | 26 | 27 |
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QueryAll - querySelectorAll() Demo

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querySelectorAll('');
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48 | 49 | 50 | 51 | -------------------------------------------------------------------------------- /Chapter1/01_05/queryall.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | document.forms.queryall.addEventListener('submit', (e) => { 11 | e.preventDefault(); 12 | 13 | refreshQuery(e.target.selector.value); 14 | 15 | return false; 16 | }); 17 | 18 | document.forms.queryall.addEventListener('click', (e) => { 19 | if (e.target.tagName != 'BUTTON') { 20 | return; 21 | } 22 | 23 | switch (e.target.innerText) { 24 | case 'delete': { 25 | deleteMatches(); 26 | } break; 27 | 28 | case 'textify': { 29 | textifyMatches(); 30 | } break; 31 | } 32 | }); 33 | 34 | refreshOutput(textarea.value); 35 | }); 36 | 37 | function refreshOutput(html) { 38 | const output = document.querySelector('#output'); 39 | 40 | output.innerHTML = html; 41 | } 42 | 43 | function refreshQuery(selector) { 44 | const output = document.querySelector('#output'); 45 | const matches = document.querySelector('#matches'); 46 | 47 | matches.innerHTML = ''; 48 | 49 | output.querySelectorAll(selector).forEach((el) => { 50 | const li = document.createElement('li'); 51 | li.innerText = el.outerHTML; 52 | 53 | matches.appendChild(li); 54 | }); 55 | } 56 | 57 | function deleteMatches() { 58 | const output = document.querySelector('#output'); 59 | 60 | const selector = document.forms.queryall.selector.value; 61 | 62 | output.querySelectorAll(selector).forEach((el) => { 63 | el.parentElement.removeChild(el); 64 | }); 65 | 66 | refreshQuery(selector); 67 | } 68 | 69 | function textifyMatches() { 70 | const output = document.querySelector('#output'); 71 | 72 | const selector = document.forms.queryall.selector.value; 73 | 74 | output.querySelectorAll(selector).forEach((el) => { 75 | const text = document.createTextNode(el.innerText); 76 | el.parentElement.replaceChild(text, el); 77 | }); 78 | 79 | refreshQuery(selector); 80 | } 81 | -------------------------------------------------------------------------------- /Chapter1/01_06/queryall.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | QueryAll 8 | 9 | 10 | 11 | 30 | 31 | 32 |
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QueryAll - querySelectorAll() Demo

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querySelectorAll('');
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55 | 56 | 57 | 58 | -------------------------------------------------------------------------------- /Chapter1/01_06/queryall.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | document.forms.queryall.addEventListener('submit', (e) => { 11 | e.preventDefault(); 12 | 13 | refreshQuery(e.target.selector.value); 14 | 15 | return false; 16 | }); 17 | 18 | document.forms.queryall.addEventListener('click', (e) => { 19 | if (e.target.tagName != 'BUTTON') { 20 | return; 21 | } 22 | 23 | switch (e.target.innerText) { 24 | case 'delete': { 25 | deleteMatches(); 26 | } break; 27 | 28 | case 'textify': { 29 | textifyMatches(); 30 | } break; 31 | } 32 | }); 33 | 34 | refreshOutput(textarea.value); 35 | }); 36 | 37 | function refreshOutput(html) { 38 | const output = document.querySelector('#output'); 39 | 40 | output.innerHTML = html; 41 | } 42 | 43 | function refreshQuery(selector) { 44 | const output = document.querySelector('#output'); 45 | const matches = document.querySelector('#matches'); 46 | 47 | document.querySelectorAll('.match').forEach((el) => { 48 | el.classList.remove('match'); 49 | }); 50 | 51 | matches.innerHTML = ''; 52 | 53 | output.querySelectorAll(selector).forEach((el) => { 54 | const li = document.createElement('li'); 55 | li.innerText = el.outerHTML; 56 | 57 | matches.appendChild(li); 58 | 59 | el.classList.add('match'); 60 | }); 61 | } 62 | 63 | function deleteMatches() { 64 | const output = document.querySelector('#output'); 65 | 66 | const selector = document.forms.queryall.selector.value; 67 | 68 | output.querySelectorAll(selector).forEach((el) => { 69 | el.parentElement.removeChild(el); 70 | }); 71 | 72 | refreshQuery(selector); 73 | } 74 | 75 | function textifyMatches() { 76 | const output = document.querySelector('#output'); 77 | 78 | const selector = document.forms.queryall.selector.value; 79 | 80 | output.querySelectorAll(selector).forEach((el) => { 81 | const text = document.createTextNode(el.innerText); 82 | el.parentElement.replaceChild(text, el); 83 | }); 84 | 85 | refreshQuery(selector); 86 | } 87 | -------------------------------------------------------------------------------- /Chapter2/02_01/prettyparse.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 21 | 22 | 23 |
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HTML Pretty Printer

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62 | 63 | 64 | 65 | -------------------------------------------------------------------------------- /Chapter2/02_01/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyParse(html)); 18 | } 19 | 20 | function prettyParse(html) { 21 | const fragment = document.createDocumentFragment(); 22 | const div = document.createElement('div'); 23 | 24 | div.innerHTML = html; 25 | 26 | div.childNodes.forEach((node) => { 27 | fragment.appendChild(node); 28 | }); 29 | 30 | return fragment; 31 | } 32 | -------------------------------------------------------------------------------- /Chapter2/02_03/prettyparse.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 21 | 22 | 23 |
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HTML Pretty Printer

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62 | 63 | 64 | 65 | -------------------------------------------------------------------------------- /Chapter2/02_03/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | testLexer(html); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function testLexer(html) { 82 | const lexer = new Lexer(html); 83 | 84 | let output = ''; 85 | 86 | while (!lexer.eof) { 87 | output += lexer.read(); 88 | } 89 | 90 | console.assert(html == output); 91 | 92 | lexer.rewind(); 93 | 94 | console.assert(lexer.match('')); 99 | lexer.consumeMatch('-->'); 100 | console.log('comment: ', comment); 101 | 102 | lexer.skipWhitespace(); 103 | console.assert(lexer.consumeMatch('<')); 104 | const tag = lexer.readIdentifier(); 105 | console.log(tag); 106 | } 107 | -------------------------------------------------------------------------------- /Chapter2/02_04/prettyparse.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 21 | 22 | 23 |
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HTML Pretty Printer

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62 | 63 | 64 | 65 | -------------------------------------------------------------------------------- /Chapter2/02_04/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyParse(html)); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function prettyParse(html) { 82 | const lexer = new Lexer(html); 83 | 84 | function parseContent() { 85 | let text = ''; 86 | const fragment = document.createDocumentFragment(); 87 | 88 | function flushText() { 89 | if (text.length) { 90 | fragment.appendChild(document.createTextNode(text)); 91 | text = ''; 92 | } 93 | } 94 | 95 | while (!lexer.eof) { 96 | text += lexer.read(); 97 | } 98 | 99 | flushText(); 100 | 101 | return fragment; 102 | } 103 | 104 | return parseContent(); 105 | } 106 | -------------------------------------------------------------------------------- /Chapter2/02_05/prettyparse.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 21 | 22 | 23 |
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HTML Pretty Printer

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62 | 63 | 64 | 65 | -------------------------------------------------------------------------------- /Chapter2/02_05/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyParse(html)); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function prettyParse(html) { 82 | const lexer = new Lexer(html); 83 | 84 | function parseComment() { 85 | const commentText = lexer.readUntil((lexer) => lexer.match('-->')); 86 | lexer.consumeMatch('-->'); 87 | 88 | return document.createComment(commentText); 89 | } 90 | 91 | function parseContent() { 92 | let text = ''; 93 | const fragment = document.createDocumentFragment(); 94 | 95 | function flushText() { 96 | if (text.length) { 97 | fragment.appendChild(document.createTextNode(text)); 98 | text = ''; 99 | } 100 | } 101 | 102 | while (!lexer.eof) { 103 | if (lexer.consumeMatch('
30 |

HTML5 Cheat Sheet

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34 |

Sectioning Content

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article
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Represents a complete, self-contained composition within a 38 | document.
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aside
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Content that isn't directly related to the parent section, 41 | frequently displayed as a sidebar.
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nav
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Contains links to other pages or sections within the 44 | current document.
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section
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A generic subgrouping of content within a larger document 47 | or application.
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61 | 62 | 63 | 64 | 65 | -------------------------------------------------------------------------------- /Chapter2/02_06/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyParse(html)); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function prettyParse(html) { 82 | const lexer = new Lexer(html); 83 | 84 | function parseComment() { 85 | const commentText = lexer.readUntil((lexer) => lexer.match('-->')); 86 | lexer.consumeMatch('-->'); 87 | 88 | return document.createComment(commentText); 89 | } 90 | 91 | function parseElement() { 92 | const tagName = lexer.readIdentifier(); 93 | const element = document.createElement(tagName); 94 | 95 | // !!!TBD!!! parse attributes 96 | console.log(lexer.readUntil((lexer) => lexer.match(/\/?>/))); 97 | 98 | if (lexer.consumeMatch('>')) { 99 | element.appendChild(parseContent()); 100 | 101 | lexer.consumeMatch(' lexer.consumeMatch('>')); 103 | } else { 104 | lexer.consumeMatch('/>'); 105 | } 106 | 107 | return element; 108 | } 109 | 110 | function parseContent() { 111 | let text = ''; 112 | const fragment = document.createDocumentFragment(); 113 | 114 | function flushText() { 115 | if (text.length) { 116 | fragment.appendChild(document.createTextNode(text)); 117 | text = ''; 118 | } 119 | } 120 | 121 | while (!lexer.eof && !lexer.match(' 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 21 | 22 | 23 |
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62 | 63 | 64 | 65 | -------------------------------------------------------------------------------- /Chapter2/02_07/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyParse(html)); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function prettyParse(html) { 82 | const lexer = new Lexer(html); 83 | 84 | function parseComment() { 85 | const commentText = lexer.readUntil((lexer) => lexer.match('-->')); 86 | lexer.consumeMatch('-->'); 87 | 88 | return document.createComment(commentText); 89 | } 90 | 91 | function parseAttribute() { 92 | const attributeName = lexer.readIdentifier(); 93 | const attribute = document.createAttribute(attributeName); 94 | 95 | if (lexer.consumeMatch(/\s*=\s*/)) { 96 | let value; 97 | 98 | if (lexer.match(/['"]/)) { 99 | const closingChar = lexer.read(); 100 | 101 | value = lexer.readUntil((lexer) => lexer.match(closingChar)); 102 | lexer.consumeMatch(closingChar); 103 | } else { 104 | value = lexer.readUntil((lexer) => lexer.match(/[\s\/>]/)); 105 | } 106 | 107 | attribute.value = value; 108 | } 109 | 110 | return attribute; 111 | } 112 | 113 | function parseElement() { 114 | const tagName = lexer.readIdentifier(); 115 | const element = document.createElement(tagName); 116 | 117 | lexer.skipWhitespace(); 118 | while (!lexer.eof && !lexer.match(/\/?>/)) { 119 | element.setAttributeNode(parseAttribute()); 120 | lexer.skipWhitespace(); 121 | } 122 | 123 | if (lexer.consumeMatch('>')) { 124 | element.appendChild(parseContent()); 125 | 126 | lexer.consumeMatch(' lexer.consumeMatch('>')); 128 | } else { 129 | lexer.consumeMatch('/>'); 130 | } 131 | 132 | return element; 133 | } 134 | 135 | function parseContent() { 136 | let text = ''; 137 | const fragment = document.createDocumentFragment(); 138 | 139 | function flushText() { 140 | if (text.length) { 141 | fragment.appendChild(document.createTextNode(text)); 142 | text = ''; 143 | } 144 | } 145 | 146 | while (!lexer.eof && !lexer.match(' 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 21 | 22 | 23 |
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62 | 63 | 64 | 65 | -------------------------------------------------------------------------------- /Chapter2/02_08/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyParse(html)); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function prettyParse(html) { 82 | const lexer = new Lexer(html); 83 | 84 | function parseComment() { 85 | const commentText = lexer.readUntil((lexer) => lexer.match('-->')); 86 | lexer.consumeMatch('-->'); 87 | 88 | return document.createComment(commentText); 89 | } 90 | 91 | function parseAttribute() { 92 | const attributeName = lexer.readIdentifier(); 93 | const attribute = document.createAttribute(attributeName); 94 | 95 | if (lexer.consumeMatch(/\s*=\s*/)) { 96 | let value; 97 | 98 | if (lexer.match(/['"]/)) { 99 | const closingChar = lexer.read(); 100 | 101 | value = lexer.readUntil((lexer) => lexer.match(closingChar)); 102 | lexer.consumeMatch(closingChar); 103 | } else { 104 | value = lexer.readUntil((lexer) => lexer.match(/[\s\/>]/)); 105 | } 106 | 107 | attribute.value = value; 108 | } 109 | 110 | return attribute; 111 | } 112 | 113 | function parseElement() { 114 | const tagName = lexer.readIdentifier(); 115 | const element = document.createElement(tagName); 116 | 117 | lexer.skipWhitespace(); 118 | while (!lexer.eof && !lexer.match(/\/?>/)) { 119 | element.setAttributeNode(parseAttribute()); 120 | lexer.skipWhitespace(); 121 | } 122 | 123 | if (lexer.consumeMatch('>')) { 124 | element.appendChild(parseContent()); 125 | 126 | lexer.consumeMatch(' lexer.consumeMatch('>')); 128 | } else { 129 | lexer.consumeMatch('/>'); 130 | } 131 | 132 | return element; 133 | } 134 | 135 | function parseContent() { 136 | let text = ''; 137 | const fragment = document.createDocumentFragment(); 138 | 139 | function flushText() { 140 | if (text.length) { 141 | fragment.appendChild(document.createTextNode(text)); 142 | text = ''; 143 | } 144 | } 145 | 146 | while (!lexer.eof && !lexer.match(' 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 21 | 22 | 23 |
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62 | 63 | 64 | 65 | -------------------------------------------------------------------------------- /Chapter2/02_09/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyParse(html)); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function prettyParse(html) { 82 | const lexer = new Lexer(html); 83 | 84 | function parseComment() { 85 | const commentText = lexer.readUntil((lexer) => lexer.match('-->')); 86 | lexer.consumeMatch('-->'); 87 | 88 | return document.createComment(commentText); 89 | } 90 | 91 | function parseAttribute() { 92 | const attributeName = lexer.readIdentifier(); 93 | const attribute = document.createAttribute(attributeName); 94 | 95 | if (lexer.consumeMatch(/\s*=\s*/)) { 96 | let value; 97 | 98 | if (lexer.match(/['"]/)) { 99 | const closingChar = lexer.read(); 100 | 101 | value = lexer.readUntil((lexer) => lexer.match(closingChar)); 102 | lexer.consumeMatch(closingChar); 103 | } else { 104 | value = lexer.readUntil((lexer) => lexer.match(/[\s\/>]/)); 105 | } 106 | 107 | attribute.value = value; 108 | } 109 | 110 | return attribute; 111 | } 112 | 113 | function parseElement() { 114 | const voidElements = ['area', 'base', 'br', 'col', 'command', 'embed', 115 | 'hr', 'img', 'input', 'keygen', 'link', 'meta', 'param', 116 | 'source', 'track', 'wbr' 117 | ]; 118 | const tagName = lexer.readIdentifier(); 119 | const element = document.createElement(tagName); 120 | 121 | lexer.skipWhitespace(); 122 | while (!lexer.eof && !lexer.match(/\/?>/)) { 123 | element.setAttributeNode(parseAttribute()); 124 | lexer.skipWhitespace(); 125 | } 126 | 127 | if (lexer.consumeMatch('>')) { 128 | if (!voidElements.includes(tagName)) { 129 | element.appendChild(parseContent()); 130 | 131 | lexer.consumeMatch(' lexer.consumeMatch('>')); 133 | } 134 | } else { 135 | lexer.consumeMatch('/>'); 136 | } 137 | 138 | return element; 139 | } 140 | 141 | function parseContent() { 142 | let text = ''; 143 | const fragment = document.createDocumentFragment(); 144 | 145 | function flushText() { 146 | if (text.length) { 147 | fragment.appendChild(document.createTextNode(text)); 148 | text = ''; 149 | } 150 | } 151 | 152 | while (!lexer.eof && !lexer.match(' 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 21 | 22 | 23 |
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62 | 63 | 64 | 65 | -------------------------------------------------------------------------------- /Chapter3/03_03/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyPrint(prettyParse(html))); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function prettyParse(html) { 82 | const lexer = new Lexer(html); 83 | 84 | function parseComment() { 85 | const commentText = lexer.readUntil((lexer) => lexer.match('-->')); 86 | lexer.consumeMatch('-->'); 87 | 88 | return document.createComment(commentText); 89 | } 90 | 91 | function parseAttribute() { 92 | const attributeName = lexer.readIdentifier(); 93 | const attribute = document.createAttribute(attributeName); 94 | 95 | if (lexer.consumeMatch(/\s*=\s*/)) { 96 | let value; 97 | 98 | if (lexer.match(/['"]/)) { 99 | const closingChar = lexer.read(); 100 | 101 | value = lexer.readUntil((lexer) => lexer.match(closingChar)); 102 | lexer.consumeMatch(closingChar); 103 | } else { 104 | value = lexer.readUntil((lexer) => lexer.match(/[\s\/>]/)); 105 | } 106 | 107 | attribute.value = value; 108 | } 109 | 110 | return attribute; 111 | } 112 | 113 | function parseElement() { 114 | const voidElements = ['area', 'base', 'br', 'col', 'command', 'embed', 115 | 'hr', 'img', 'input', 'keygen', 'link', 'meta', 'param', 116 | 'source', 'track', 'wbr' 117 | ]; 118 | const tagName = lexer.readIdentifier(); 119 | const element = document.createElement(tagName); 120 | 121 | lexer.skipWhitespace(); 122 | while (!lexer.eof && !lexer.match(/\/?>/)) { 123 | element.setAttributeNode(parseAttribute()); 124 | lexer.skipWhitespace(); 125 | } 126 | 127 | if (lexer.consumeMatch('>')) { 128 | if (!voidElements.includes(tagName)) { 129 | element.appendChild(parseContent()); 130 | 131 | lexer.consumeMatch(' lexer.consumeMatch('>')); 133 | } 134 | } else { 135 | lexer.consumeMatch('/>'); 136 | } 137 | 138 | return element; 139 | } 140 | 141 | function parseContent() { 142 | let text = ''; 143 | const fragment = document.createDocumentFragment(); 144 | 145 | function flushText() { 146 | if (text.length) { 147 | fragment.appendChild(document.createTextNode(text)); 148 | text = ''; 149 | } 150 | } 151 | 152 | while (!lexer.eof && !lexer.match(' { 177 | fragment.appendChild(prettyPrint(child)); 178 | }); 179 | 180 | return fragment; 181 | } 182 | 183 | switch (node.nodeType) { 184 | case Node.DOCUMENT_FRAGMENT_NODE: { 185 | return printChildNodes(node); 186 | } 187 | } 188 | 189 | return node.cloneNode(true); 190 | } 191 | -------------------------------------------------------------------------------- /Chapter3/03_04/prettyparse.css: -------------------------------------------------------------------------------- 1 | pp-comment { 2 | color: #888; 3 | } 4 | 5 | pp-comment::before { 6 | content: ""; 11 | } 12 | -------------------------------------------------------------------------------- /Chapter3/03_04/prettyparse.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 12 | 13 | 23 | 24 | 25 |
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64 | 65 | 66 | 67 | -------------------------------------------------------------------------------- /Chapter3/03_04/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyPrint(prettyParse(html))); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function prettyParse(html) { 82 | const lexer = new Lexer(html); 83 | 84 | function parseComment() { 85 | const commentText = lexer.readUntil((lexer) => lexer.match('-->')); 86 | lexer.consumeMatch('-->'); 87 | 88 | return document.createComment(commentText); 89 | } 90 | 91 | function parseAttribute() { 92 | const attributeName = lexer.readIdentifier(); 93 | const attribute = document.createAttribute(attributeName); 94 | 95 | if (lexer.consumeMatch(/\s*=\s*/)) { 96 | let value; 97 | 98 | if (lexer.match(/['"]/)) { 99 | const closingChar = lexer.read(); 100 | 101 | value = lexer.readUntil((lexer) => lexer.match(closingChar)); 102 | lexer.consumeMatch(closingChar); 103 | } else { 104 | value = lexer.readUntil((lexer) => lexer.match(/[\s\/>]/)); 105 | } 106 | 107 | attribute.value = value; 108 | } 109 | 110 | return attribute; 111 | } 112 | 113 | function parseElement() { 114 | const voidElements = ['area', 'base', 'br', 'col', 'command', 'embed', 115 | 'hr', 'img', 'input', 'keygen', 'link', 'meta', 'param', 116 | 'source', 'track', 'wbr' 117 | ]; 118 | const tagName = lexer.readIdentifier(); 119 | const element = document.createElement(tagName); 120 | 121 | lexer.skipWhitespace(); 122 | while (!lexer.eof && !lexer.match(/\/?>/)) { 123 | element.setAttributeNode(parseAttribute()); 124 | lexer.skipWhitespace(); 125 | } 126 | 127 | if (lexer.consumeMatch('>')) { 128 | if (!voidElements.includes(tagName)) { 129 | element.appendChild(parseContent()); 130 | 131 | lexer.consumeMatch(' lexer.consumeMatch('>')); 133 | } 134 | } else { 135 | lexer.consumeMatch('/>'); 136 | } 137 | 138 | return element; 139 | } 140 | 141 | function parseContent() { 142 | let text = ''; 143 | const fragment = document.createDocumentFragment(); 144 | 145 | function flushText() { 146 | if (text.length) { 147 | fragment.appendChild(document.createTextNode(text)); 148 | text = ''; 149 | } 150 | } 151 | 152 | while (!lexer.eof && !lexer.match(' { 177 | fragment.appendChild(prettyPrint(child)); 178 | }); 179 | 180 | return fragment; 181 | } 182 | 183 | switch (node.nodeType) { 184 | case Node.COMMENT_NODE: { 185 | const comment = document.createElement('pp-comment'); 186 | comment.innerText = node.nodeValue; 187 | 188 | return comment; 189 | } 190 | 191 | case Node.DOCUMENT_FRAGMENT_NODE: { 192 | return printChildNodes(node); 193 | } 194 | } 195 | 196 | return node.cloneNode(true); 197 | } 198 | -------------------------------------------------------------------------------- /Chapter3/03_05/prettyparse.css: -------------------------------------------------------------------------------- 1 | pp-output { 2 | display: block; 3 | font-family: monospace; 4 | white-space: pre-wrap; 5 | 6 | color: #0a68b6; 7 | } 8 | 9 | pp-comment { 10 | color: #888; 11 | } 12 | 13 | pp-comment::before { 14 | content: ""; 19 | } 20 | 21 | pp-opentag::before { 22 | content: "<"; 23 | } 24 | 25 | pp-closetag::before { 26 | content: ""; 31 | } 32 | 33 | pp-tagname { 34 | color: #0c98ea; 35 | } 36 | -------------------------------------------------------------------------------- /Chapter3/03_05/prettyparse.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 12 | 13 | 23 | 24 | 25 |
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64 | 65 | 66 | 67 | -------------------------------------------------------------------------------- /Chapter3/03_05/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyPrint(prettyParse(html))); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function prettyParse(html) { 82 | const lexer = new Lexer(html); 83 | 84 | function parseComment() { 85 | const commentText = lexer.readUntil((lexer) => lexer.match('-->')); 86 | lexer.consumeMatch('-->'); 87 | 88 | return document.createComment(commentText); 89 | } 90 | 91 | function parseAttribute() { 92 | const attributeName = lexer.readIdentifier(); 93 | const attribute = document.createAttribute(attributeName); 94 | 95 | if (lexer.consumeMatch(/\s*=\s*/)) { 96 | let value; 97 | 98 | if (lexer.match(/['"]/)) { 99 | const closingChar = lexer.read(); 100 | 101 | value = lexer.readUntil((lexer) => lexer.match(closingChar)); 102 | lexer.consumeMatch(closingChar); 103 | } else { 104 | value = lexer.readUntil((lexer) => lexer.match(/[\s\/>]/)); 105 | } 106 | 107 | attribute.value = value; 108 | } 109 | 110 | return attribute; 111 | } 112 | 113 | function parseElement() { 114 | const voidElements = ['area', 'base', 'br', 'col', 'command', 'embed', 115 | 'hr', 'img', 'input', 'keygen', 'link', 'meta', 'param', 116 | 'source', 'track', 'wbr' 117 | ]; 118 | const tagName = lexer.readIdentifier(); 119 | const element = document.createElement(tagName); 120 | 121 | lexer.skipWhitespace(); 122 | while (!lexer.eof && !lexer.match(/\/?>/)) { 123 | element.setAttributeNode(parseAttribute()); 124 | lexer.skipWhitespace(); 125 | } 126 | 127 | if (lexer.consumeMatch('>')) { 128 | if (!voidElements.includes(tagName)) { 129 | element.appendChild(parseContent()); 130 | 131 | lexer.consumeMatch(' lexer.consumeMatch('>')); 133 | } 134 | } else { 135 | lexer.consumeMatch('/>'); 136 | } 137 | 138 | return element; 139 | } 140 | 141 | function parseContent() { 142 | let text = ''; 143 | const fragment = document.createDocumentFragment(); 144 | 145 | function flushText() { 146 | if (text.length) { 147 | fragment.appendChild(document.createTextNode(text)); 148 | text = ''; 149 | } 150 | } 151 | 152 | while (!lexer.eof && !lexer.match(' { 177 | fragment.appendChild(prettyPrint(child)); 178 | }); 179 | 180 | return fragment; 181 | } 182 | 183 | switch (node.nodeType) { 184 | case Node.COMMENT_NODE: { 185 | const comment = document.createElement('pp-comment'); 186 | comment.innerText = node.nodeValue; 187 | 188 | return comment; 189 | } 190 | 191 | case Node.DOCUMENT_FRAGMENT_NODE: { 192 | return printChildNodes(node); 193 | } 194 | 195 | case Node.ELEMENT_NODE: { 196 | const element = document.createElement('pp-element'); 197 | 198 | const openTag = document.createElement('pp-opentag'); 199 | 200 | const tagName = document.createElement('pp-tagname'); 201 | tagName.innerText = node.nodeName.toLowerCase(); 202 | openTag.appendChild(tagName); 203 | 204 | // !!!TBD!!! process element attributes 205 | 206 | element.appendChild(openTag); 207 | 208 | if (node.hasChildNodes()) { 209 | element.appendChild(printChildNodes(node)); 210 | } 211 | 212 | const closeTag = document.createElement('pp-closetag'); 213 | closeTag.appendChild(tagName.cloneNode(true)); 214 | element.appendChild(closeTag); 215 | 216 | return element; 217 | } 218 | } 219 | 220 | return node.cloneNode(true); 221 | } 222 | -------------------------------------------------------------------------------- /Chapter3/03_06/prettyparse.css: -------------------------------------------------------------------------------- 1 | pp-output { 2 | display: block; 3 | font-family: monospace; 4 | white-space: pre-wrap; 5 | 6 | color: #0a68b6; 7 | } 8 | 9 | pp-comment { 10 | color: #888; 11 | } 12 | 13 | pp-comment::before { 14 | content: ""; 19 | } 20 | 21 | pp-opentag::before { 22 | content: "<"; 23 | } 24 | 25 | pp-closetag::before { 26 | content: ""; 31 | } 32 | 33 | pp-tagname { 34 | color: #0c98ea; 35 | } 36 | 37 | pp-attrname { 38 | color: #ca6836; 39 | } 40 | 41 | pp-attribute::before { 42 | content: " "; 43 | } 44 | 45 | pp-attrvalue::before { 46 | content: '="'; 47 | } 48 | 49 | pp-attrvalue::after { 50 | content: '"'; 51 | } 52 | -------------------------------------------------------------------------------- /Chapter3/03_06/prettyparse.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 12 | 13 | 23 | 24 | 25 |
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64 | 65 | 66 | 67 | -------------------------------------------------------------------------------- /Chapter3/03_06/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyPrint(prettyParse(html))); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function prettyParse(html) { 82 | const lexer = new Lexer(html); 83 | 84 | function parseComment() { 85 | const commentText = lexer.readUntil((lexer) => lexer.match('-->')); 86 | lexer.consumeMatch('-->'); 87 | 88 | return document.createComment(commentText); 89 | } 90 | 91 | function parseAttribute() { 92 | const attributeName = lexer.readIdentifier(); 93 | const attribute = document.createAttribute(attributeName); 94 | 95 | if (lexer.consumeMatch(/\s*=\s*/)) { 96 | let value; 97 | 98 | if (lexer.match(/['"]/)) { 99 | const closingChar = lexer.read(); 100 | 101 | value = lexer.readUntil((lexer) => lexer.match(closingChar)); 102 | lexer.consumeMatch(closingChar); 103 | } else { 104 | value = lexer.readUntil((lexer) => lexer.match(/[\s\/>]/)); 105 | } 106 | 107 | attribute.value = value; 108 | } 109 | 110 | return attribute; 111 | } 112 | 113 | function parseElement() { 114 | const voidElements = ['area', 'base', 'br', 'col', 'command', 'embed', 115 | 'hr', 'img', 'input', 'keygen', 'link', 'meta', 'param', 116 | 'source', 'track', 'wbr' 117 | ]; 118 | const tagName = lexer.readIdentifier(); 119 | const element = document.createElement(tagName); 120 | 121 | lexer.skipWhitespace(); 122 | while (!lexer.eof && !lexer.match(/\/?>/)) { 123 | element.setAttributeNode(parseAttribute()); 124 | lexer.skipWhitespace(); 125 | } 126 | 127 | if (lexer.consumeMatch('>')) { 128 | if (!voidElements.includes(tagName)) { 129 | element.appendChild(parseContent()); 130 | 131 | lexer.consumeMatch(' lexer.consumeMatch('>')); 133 | } 134 | } else { 135 | lexer.consumeMatch('/>'); 136 | } 137 | 138 | return element; 139 | } 140 | 141 | function parseContent() { 142 | let text = ''; 143 | const fragment = document.createDocumentFragment(); 144 | 145 | function flushText() { 146 | if (text.length) { 147 | fragment.appendChild(document.createTextNode(text)); 148 | text = ''; 149 | } 150 | } 151 | 152 | while (!lexer.eof && !lexer.match(' { 177 | fragment.appendChild(prettyPrint(child)); 178 | }); 179 | 180 | return fragment; 181 | } 182 | 183 | switch (node.nodeType) { 184 | case Node.COMMENT_NODE: { 185 | const comment = document.createElement('pp-comment'); 186 | comment.innerText = node.nodeValue; 187 | 188 | return comment; 189 | } 190 | 191 | case Node.DOCUMENT_FRAGMENT_NODE: { 192 | return printChildNodes(node); 193 | } 194 | 195 | case Node.ELEMENT_NODE: { 196 | const element = document.createElement('pp-element'); 197 | 198 | const openTag = document.createElement('pp-opentag'); 199 | 200 | const tagName = document.createElement('pp-tagname'); 201 | tagName.innerText = node.nodeName.toLowerCase(); 202 | openTag.appendChild(tagName); 203 | 204 | Array.from(node.attributes).forEach((attr) => { 205 | openTag.appendChild(prettyPrint(attr)); 206 | }); 207 | 208 | element.appendChild(openTag); 209 | 210 | if (node.hasChildNodes()) { 211 | element.appendChild(printChildNodes(node)); 212 | } 213 | 214 | const closeTag = document.createElement('pp-closetag'); 215 | closeTag.appendChild(tagName.cloneNode(true)); 216 | element.appendChild(closeTag); 217 | 218 | return element; 219 | } 220 | 221 | case Node.ATTRIBUTE_NODE: { 222 | const attribute = document.createElement('pp-attribute'); 223 | 224 | const attrName = document.createElement('pp-attrname'); 225 | attrName.innerText = node.nodeName.toLowerCase(); 226 | attribute.appendChild(attrName); 227 | 228 | if (node.nodeValue !== '') { 229 | const attrValue = document.createElement('pp-attrvalue'); 230 | attrValue.innerText = node.nodeValue; 231 | attribute.appendChild(attrValue); 232 | } 233 | 234 | return attribute; 235 | } 236 | } 237 | 238 | return node.cloneNode(true); 239 | } 240 | -------------------------------------------------------------------------------- /Chapter3/03_07/prettyparse.css: -------------------------------------------------------------------------------- 1 | pp-output { 2 | display: block; 3 | font-family: monospace; 4 | white-space: pre-wrap; 5 | 6 | color: #0a68b6; 7 | } 8 | 9 | pp-comment { 10 | color: #888; 11 | } 12 | 13 | pp-comment::before { 14 | content: ""; 19 | } 20 | 21 | pp-opentag::before { 22 | content: "<"; 23 | } 24 | 25 | pp-closetag::before { 26 | content: ""; 31 | } 32 | 33 | pp-tagname { 34 | color: #0c98ea; 35 | } 36 | 37 | pp-attrname { 38 | color: #ca6836; 39 | } 40 | 41 | pp-attribute::before { 42 | content: " "; 43 | } 44 | 45 | pp-attrvalue::before { 46 | content: '="'; 47 | } 48 | 49 | pp-attrvalue::after { 50 | content: '"'; 51 | } 52 | 53 | pp-text { 54 | color: #000; 55 | } 56 | -------------------------------------------------------------------------------- /Chapter3/03_07/prettyparse.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 12 | 13 | 29 | 30 | 31 |
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70 | 71 | 72 | 73 | -------------------------------------------------------------------------------- /Chapter3/03_07/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyPrint(prettyParse(html))); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function prettyParse(html) { 82 | const lexer = new Lexer(html); 83 | 84 | function parseComment() { 85 | const commentText = lexer.readUntil((lexer) => lexer.match('-->')); 86 | lexer.consumeMatch('-->'); 87 | 88 | return document.createComment(commentText); 89 | } 90 | 91 | function parseAttribute() { 92 | const attributeName = lexer.readIdentifier(); 93 | const attribute = document.createAttribute(attributeName); 94 | 95 | if (lexer.consumeMatch(/\s*=\s*/)) { 96 | let value; 97 | 98 | if (lexer.match(/['"]/)) { 99 | const closingChar = lexer.read(); 100 | 101 | value = lexer.readUntil((lexer) => lexer.match(closingChar)); 102 | lexer.consumeMatch(closingChar); 103 | } else { 104 | value = lexer.readUntil((lexer) => lexer.match(/[\s\/>]/)); 105 | } 106 | 107 | attribute.value = value; 108 | } 109 | 110 | return attribute; 111 | } 112 | 113 | function parseElement() { 114 | const voidElements = ['area', 'base', 'br', 'col', 'command', 'embed', 115 | 'hr', 'img', 'input', 'keygen', 'link', 'meta', 'param', 116 | 'source', 'track', 'wbr' 117 | ]; 118 | const tagName = lexer.readIdentifier(); 119 | const element = document.createElement(tagName); 120 | 121 | lexer.skipWhitespace(); 122 | while (!lexer.eof && !lexer.match(/\/?>/)) { 123 | element.setAttributeNode(parseAttribute()); 124 | lexer.skipWhitespace(); 125 | } 126 | 127 | if (lexer.consumeMatch('>')) { 128 | if (!voidElements.includes(tagName)) { 129 | element.appendChild(parseContent()); 130 | 131 | lexer.consumeMatch(' lexer.consumeMatch('>')); 133 | } 134 | } else { 135 | lexer.consumeMatch('/>'); 136 | } 137 | 138 | return element; 139 | } 140 | 141 | function parseContent() { 142 | let text = ''; 143 | const fragment = document.createDocumentFragment(); 144 | 145 | function flushText() { 146 | if (text.length) { 147 | fragment.appendChild(document.createTextNode(text)); 148 | text = ''; 149 | } 150 | } 151 | 152 | while (!lexer.eof && !lexer.match(' { 177 | fragment.appendChild(prettyPrint(child)); 178 | }); 179 | 180 | return fragment; 181 | } 182 | 183 | switch (node.nodeType) { 184 | case Node.COMMENT_NODE: { 185 | const comment = document.createElement('pp-comment'); 186 | comment.innerText = node.nodeValue; 187 | 188 | return comment; 189 | } 190 | 191 | case Node.DOCUMENT_FRAGMENT_NODE: { 192 | return printChildNodes(node); 193 | } 194 | 195 | case Node.ELEMENT_NODE: { 196 | const element = document.createElement('pp-element'); 197 | 198 | const openTag = document.createElement('pp-opentag'); 199 | 200 | const tagName = document.createElement('pp-tagname'); 201 | tagName.innerText = node.nodeName.toLowerCase(); 202 | openTag.appendChild(tagName); 203 | 204 | Array.from(node.attributes).forEach((attr) => { 205 | openTag.appendChild(prettyPrint(attr)); 206 | }); 207 | 208 | element.appendChild(openTag); 209 | 210 | if (node.hasChildNodes()) { 211 | element.appendChild(printChildNodes(node)); 212 | } 213 | 214 | const closeTag = document.createElement('pp-closetag'); 215 | closeTag.appendChild(tagName.cloneNode(true)); 216 | element.appendChild(closeTag); 217 | 218 | return element; 219 | } 220 | 221 | case Node.ATTRIBUTE_NODE: { 222 | const attribute = document.createElement('pp-attribute'); 223 | 224 | const attrName = document.createElement('pp-attrname'); 225 | attrName.innerText = node.nodeName.toLowerCase(); 226 | attribute.appendChild(attrName); 227 | 228 | if (node.nodeValue !== '') { 229 | const attrValue = document.createElement('pp-attrvalue'); 230 | attrValue.innerText = node.nodeValue; 231 | attribute.appendChild(attrValue); 232 | } 233 | 234 | return attribute; 235 | } 236 | 237 | case Node.TEXT_NODE: { 238 | const text = document.createElement('pp-text'); 239 | text.innerText = node.nodeValue; 240 | 241 | return text; 242 | } 243 | } 244 | 245 | return node.cloneNode(true); 246 | } 247 | -------------------------------------------------------------------------------- /Chapter3/03_08/prettyparse.css: -------------------------------------------------------------------------------- 1 | pp-output { 2 | display: block; 3 | font-family: monospace; 4 | white-space: pre-wrap; 5 | 6 | color: #0a68b6; 7 | } 8 | 9 | pp-comment { 10 | color: #888; 11 | } 12 | 13 | pp-comment::before { 14 | content: ""; 19 | } 20 | 21 | pp-opentag::before { 22 | content: "<"; 23 | } 24 | 25 | pp-closetag::before { 26 | content: ""; 31 | } 32 | 33 | pp-tagname { 34 | color: #0c98ea; 35 | } 36 | 37 | pp-attrname { 38 | color: #ca6836; 39 | } 40 | 41 | pp-attribute::before { 42 | content: " "; 43 | } 44 | 45 | pp-attrvalue::before { 46 | content: '="'; 47 | } 48 | 49 | pp-attrvalue::after { 50 | content: '"'; 51 | } 52 | 53 | pp-text { 54 | color: #000; 55 | } 56 | -------------------------------------------------------------------------------- /Chapter3/03_08/prettyparse.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 12 | 13 | 29 | 30 | 31 |
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70 | 71 | 72 | 73 | -------------------------------------------------------------------------------- /Chapter3/03_08/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyPrint(prettyParse(html))); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function prettyParse(html) { 82 | const lexer = new Lexer(html); 83 | 84 | function parseComment() { 85 | const commentText = lexer.readUntil((lexer) => lexer.match('-->')); 86 | lexer.consumeMatch('-->'); 87 | 88 | return document.createComment(commentText); 89 | } 90 | 91 | function parseAttribute() { 92 | const attributeName = lexer.readIdentifier(); 93 | const attribute = document.createAttribute(attributeName); 94 | 95 | if (lexer.consumeMatch(/\s*=\s*/)) { 96 | let value; 97 | 98 | if (lexer.match(/['"]/)) { 99 | const closingChar = lexer.read(); 100 | 101 | value = lexer.readUntil((lexer) => lexer.match(closingChar)); 102 | lexer.consumeMatch(closingChar); 103 | } else { 104 | value = lexer.readUntil((lexer) => lexer.match(/[\s\/>]/)); 105 | } 106 | 107 | attribute.value = value; 108 | } 109 | 110 | return attribute; 111 | } 112 | 113 | function parseElement() { 114 | const voidElements = ['area', 'base', 'br', 'col', 'command', 'embed', 115 | 'hr', 'img', 'input', 'keygen', 'link', 'meta', 'param', 116 | 'source', 'track', 'wbr' 117 | ]; 118 | const tagName = lexer.readIdentifier(); 119 | const element = document.createElement(tagName); 120 | 121 | lexer.skipWhitespace(); 122 | while (!lexer.eof && !lexer.match(/\/?>/)) { 123 | element.setAttributeNode(parseAttribute()); 124 | lexer.skipWhitespace(); 125 | } 126 | 127 | if (lexer.consumeMatch('>')) { 128 | if (!voidElements.includes(tagName)) { 129 | element.appendChild(parseContent()); 130 | 131 | lexer.consumeMatch(' lexer.consumeMatch('>')); 133 | } 134 | } else { 135 | lexer.consumeMatch('/>'); 136 | } 137 | 138 | return element; 139 | } 140 | 141 | function parseContent() { 142 | let text = ''; 143 | const fragment = document.createDocumentFragment(); 144 | 145 | function flushText() { 146 | if (text.length) { 147 | fragment.appendChild(document.createTextNode(text)); 148 | text = ''; 149 | } 150 | } 151 | 152 | while (!lexer.eof && !lexer.match(' { 177 | fragment.appendChild(prettyPrint(child)); 178 | }); 179 | 180 | return fragment; 181 | } 182 | 183 | switch (node.nodeType) { 184 | case Node.COMMENT_NODE: { 185 | const comment = document.createElement('pp-comment'); 186 | comment.innerText = node.nodeValue; 187 | 188 | return comment; 189 | } 190 | 191 | case Node.DOCUMENT_FRAGMENT_NODE: { 192 | return printChildNodes(node); 193 | } 194 | 195 | case Node.ELEMENT_NODE: { 196 | const element = document.createElement('pp-element'); 197 | 198 | const openTag = document.createElement('pp-opentag'); 199 | 200 | const tagName = document.createElement('pp-tagname'); 201 | tagName.innerText = node.nodeName.toLowerCase(); 202 | openTag.appendChild(tagName); 203 | 204 | Array.from(node.attributes).forEach((attr) => { 205 | openTag.appendChild(prettyPrint(attr)); 206 | }); 207 | 208 | element.appendChild(openTag); 209 | 210 | if (node.hasChildNodes()) { 211 | element.appendChild(printChildNodes(node)); 212 | } 213 | 214 | const closeTag = document.createElement('pp-closetag'); 215 | closeTag.appendChild(tagName.cloneNode(true)); 216 | element.appendChild(closeTag); 217 | 218 | return element; 219 | } 220 | 221 | case Node.ATTRIBUTE_NODE: { 222 | const attribute = document.createElement('pp-attribute'); 223 | 224 | const attrName = document.createElement('pp-attrname'); 225 | attrName.innerText = node.nodeName.toLowerCase(); 226 | attribute.appendChild(attrName); 227 | 228 | if (node.nodeValue !== '') { 229 | const attrValue = document.createElement('pp-attrvalue'); 230 | attrValue.innerText = node.nodeValue; 231 | attribute.appendChild(attrValue); 232 | } 233 | 234 | return attribute; 235 | } 236 | 237 | case Node.TEXT_NODE: { 238 | const text = document.createElement('pp-text'); 239 | text.innerText = node.nodeValue; 240 | 241 | return text; 242 | } 243 | } 244 | 245 | return node.cloneNode(true); 246 | } 247 | -------------------------------------------------------------------------------- /Chapter3/03_09/prettyparse.css: -------------------------------------------------------------------------------- 1 | pp-output { 2 | display: block; 3 | font-family: monospace; 4 | white-space: pre-wrap; 5 | 6 | color: #0a68b6; 7 | } 8 | 9 | pp-comment { 10 | color: #888; 11 | } 12 | 13 | pp-comment::before { 14 | content: ""; 19 | } 20 | 21 | pp-opentag::before { 22 | content: "<"; 23 | } 24 | 25 | pp-closetag::before { 26 | content: ""; 31 | } 32 | 33 | pp-opentag.empty::after { 34 | content: "/>"; 35 | } 36 | 37 | pp-tagname { 38 | color: #0c98ea; 39 | } 40 | 41 | pp-attrname { 42 | color: #ca6836; 43 | } 44 | 45 | pp-attribute::before { 46 | content: " "; 47 | } 48 | 49 | pp-attrvalue::before { 50 | content: '="'; 51 | } 52 | 53 | pp-attrvalue::after { 54 | content: '"'; 55 | } 56 | 57 | pp-text { 58 | color: #000; 59 | } 60 | -------------------------------------------------------------------------------- /Chapter3/03_09/prettyparse.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | HTML Pretty Printer 8 | 9 | 10 | 11 | 12 | 13 | 29 | 30 | 31 |
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70 | 71 | 72 | 73 | -------------------------------------------------------------------------------- /Chapter3/03_09/prettyparse.js: -------------------------------------------------------------------------------- 1 | /* eslint no-undef: "error" */ 2 | /* eslint-env browser */ 3 | 4 | document.addEventListener('DOMContentLoaded', () => { 5 | const textarea = document.querySelector('textarea[name=source]'); 6 | textarea.addEventListener('input', (e) => { 7 | refreshOutput(e.target.value); 8 | }); 9 | 10 | refreshOutput(textarea.value); 11 | }); 12 | 13 | function refreshOutput(html) { 14 | const output = document.querySelector('pp-output'); 15 | 16 | output.innerText = ''; 17 | output.appendChild(prettyPrint(prettyParse(html))); 18 | } 19 | 20 | class Lexer { 21 | constructor(source) { 22 | this.source = source; 23 | this.file_pointer = 0; 24 | } 25 | 26 | read() { 27 | if (this.file_pointer < 0 || this.file_pointer >= this.source.length) { 28 | return undefined; 29 | } 30 | 31 | return this.source[this.file_pointer++]; 32 | } 33 | 34 | rewind() { 35 | this.file_pointer = 0; 36 | } 37 | 38 | match(token) { 39 | return this.remainder.search(token) === 0; 40 | } 41 | 42 | consumeMatch(token) { 43 | const match = this.remainder.match(token); 44 | 45 | if (match && match.length && match.index == 0) { 46 | this.file_pointer += match[0].length; 47 | 48 | return true; 49 | } 50 | 51 | return false; 52 | } 53 | 54 | readUntil(condition) { 55 | const start_pointer = this.file_pointer; 56 | 57 | while (!this.eof && !condition(this)) { 58 | this.file_pointer++; 59 | } 60 | 61 | return this.source.substring(start_pointer, this.file_pointer); 62 | } 63 | 64 | readIdentifier() { 65 | return this.readUntil((lexer) => !lexer.match(/\w/)); 66 | } 67 | 68 | skipWhitespace() { 69 | return this.readUntil((lexer) => !lexer.match(/\s/)); 70 | } 71 | 72 | get eof() { 73 | return this.file_pointer >= this.source.length; 74 | } 75 | 76 | get remainder() { 77 | return this.source.substring(this.file_pointer); 78 | } 79 | } 80 | 81 | function prettyParse(html) { 82 | const lexer = new Lexer(html); 83 | 84 | function parseComment() { 85 | const commentText = lexer.readUntil((lexer) => lexer.match('-->')); 86 | lexer.consumeMatch('-->'); 87 | 88 | return document.createComment(commentText); 89 | } 90 | 91 | function parseAttribute() { 92 | const attributeName = lexer.readIdentifier(); 93 | const attribute = document.createAttribute(attributeName); 94 | 95 | if (lexer.consumeMatch(/\s*=\s*/)) { 96 | let value; 97 | 98 | if (lexer.match(/['"]/)) { 99 | const closingChar = lexer.read(); 100 | 101 | value = lexer.readUntil((lexer) => lexer.match(closingChar)); 102 | lexer.consumeMatch(closingChar); 103 | } else { 104 | value = lexer.readUntil((lexer) => lexer.match(/[\s\/>]/)); 105 | } 106 | 107 | attribute.value = value; 108 | } 109 | 110 | return attribute; 111 | } 112 | 113 | function parseElement() { 114 | const voidElements = ['area', 'base', 'br', 'col', 'command', 'embed', 115 | 'hr', 'img', 'input', 'keygen', 'link', 'meta', 'param', 116 | 'source', 'track', 'wbr' 117 | ]; 118 | const tagName = lexer.readIdentifier(); 119 | const element = document.createElement(tagName); 120 | 121 | lexer.skipWhitespace(); 122 | while (!lexer.eof && !lexer.match(/\/?>/)) { 123 | element.setAttributeNode(parseAttribute()); 124 | lexer.skipWhitespace(); 125 | } 126 | 127 | if (lexer.consumeMatch('>')) { 128 | if (!voidElements.includes(tagName)) { 129 | element.appendChild(parseContent()); 130 | 131 | lexer.consumeMatch(' lexer.consumeMatch('>')); 133 | } 134 | } else { 135 | lexer.consumeMatch('/>'); 136 | } 137 | 138 | return element; 139 | } 140 | 141 | function parseContent() { 142 | let text = ''; 143 | const fragment = document.createDocumentFragment(); 144 | 145 | function flushText() { 146 | if (text.length) { 147 | fragment.appendChild(document.createTextNode(text)); 148 | text = ''; 149 | } 150 | } 151 | 152 | while (!lexer.eof && !lexer.match(' { 177 | fragment.appendChild(prettyPrint(child)); 178 | }); 179 | 180 | return fragment; 181 | } 182 | 183 | switch (node.nodeType) { 184 | case Node.COMMENT_NODE: { 185 | const comment = document.createElement('pp-comment'); 186 | comment.innerText = node.nodeValue; 187 | 188 | return comment; 189 | } 190 | 191 | case Node.DOCUMENT_FRAGMENT_NODE: { 192 | return printChildNodes(node); 193 | } 194 | 195 | case Node.ELEMENT_NODE: { 196 | const element = document.createElement('pp-element'); 197 | 198 | const openTag = document.createElement('pp-opentag'); 199 | 200 | const tagName = document.createElement('pp-tagname'); 201 | tagName.innerText = node.nodeName.toLowerCase(); 202 | openTag.appendChild(tagName); 203 | 204 | Array.from(node.attributes).forEach((attr) => { 205 | openTag.appendChild(prettyPrint(attr)); 206 | }); 207 | 208 | element.appendChild(openTag); 209 | 210 | if (node.hasChildNodes()) { 211 | element.appendChild(printChildNodes(node)); 212 | 213 | const closeTag = document.createElement('pp-closetag'); 214 | closeTag.appendChild(tagName.cloneNode(true)); 215 | element.appendChild(closeTag); 216 | } else { 217 | openTag.classList.add('empty'); 218 | } 219 | 220 | 221 | return element; 222 | } 223 | 224 | case Node.ATTRIBUTE_NODE: { 225 | const attribute = document.createElement('pp-attribute'); 226 | 227 | const attrName = document.createElement('pp-attrname'); 228 | attrName.innerText = node.nodeName.toLowerCase(); 229 | attribute.appendChild(attrName); 230 | 231 | if (node.nodeValue !== '') { 232 | const attrValue = document.createElement('pp-attrvalue'); 233 | attrValue.innerText = node.nodeValue; 234 | attribute.appendChild(attrValue); 235 | } 236 | 237 | return attribute; 238 | } 239 | 240 | case Node.TEXT_NODE: { 241 | const text = document.createElement('pp-text'); 242 | text.innerText = node.nodeValue; 243 | 244 | return text; 245 | } 246 | } 247 | 248 | return node.cloneNode(true); 249 | } 250 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | LinkedIn Learning Exercise Files License Agreement 2 | ================================================== 3 | 4 | This License Agreement (the "Agreement") is a binding legal agreement 5 | between you (as an individual or entity, as applicable) and LinkedIn 6 | Corporation (“LinkedIn”). 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Please review the applicable licenses of the 12 | additional dependencies. 13 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Vanilla JavaScript: Building on the Document Object Model (DOM) 2 | This is the repository for the LinkedIn Learning course Vanilla JavaScript: Building on the Document Object Model (DOM). The full course is available from [LinkedIn Learning][lil-course-url]. 3 | 4 | ![Vanilla JavaScript: Building on the Document Object Model (DOM)][lil-thumbnail-url] 5 | 6 | At the heart of every web application and framework (such as Angular or React) lies the DOM, the Document Object Model. In this course, instructor W. Scott Means explores the DOM from the bottom up. After a fast-paced introduction to the Node interface and DOM trees, Scott takes things to the next level by constructing a functioning HTML parser. He shows you how HTML source code is translated into a complete DOM tree, including comments, text nodes, and elements with attribute nodes. Then, Scott demonstrates how the resulting DOM tree can be traversed and transformed using DOM-specific maps and lists, tree references, and document fragments to produce pretty-printed HTML output. He concludes the course with advice on how you can practice what you’ve learned and get one step closer to mastering the DOM. 7 | 8 | ## Instructions 9 | This repository has branches for each of the videos in the course. You can use the branch pop up menu in github to switch to a specific branch and take a look at the course at that stage, or you can add `/tree/BRANCH_NAME` to the URL to go to the branch you want to access. 10 | 11 | ## Branches 12 | The branches are structured to correspond to the videos in the course. The naming convention is `CHAPTER#_MOVIE#`. As an example, the branch named `02_03` corresponds to the second chapter and the third video in that chapter. 13 | Some branches will have a beginning and an end state. These are marked with the letters `b` for "beginning" and `e` for "end". The `b` branch contains the code as it is at the beginning of the movie. The `e` branch contains the code as it is at the end of the movie. The `main` branch holds the final state of the code when in the course. 14 | 15 | When switching from one exercise files branch to the next after making changes to the files, you may get a message like this: 16 | 17 | error: Your local changes to the following files would be overwritten by checkout: [files] 18 | Please commit your changes or stash them before you switch branches. 19 | Aborting 20 | 21 | To resolve this issue: 22 | 23 | Add changes to git using this command: git add . 24 | Commit changes using this command: git commit -m "some message" 25 | 26 | 27 | ### Instructor 28 | 29 | W. Scott Means 30 | 31 | Software Developer 32 | 33 | 34 | 35 | Check out my other courses on [LinkedIn Learning](https://www.linkedin.com/learning/instructors/w-scott-means). 36 | 37 | [lil-course-url]: https://www.linkedin.com/learning/vanilla-javascript-building-on-the-document-object-model-dom 38 | [lil-thumbnail-url]: https://cdn.lynda.com/course/2876283/2876283-1624636982594-16x9.jpg 39 | --------------------------------------------------------------------------------