├── component.json ├── screen.css ├── LICENSE.md ├── README.md ├── jquery.stickem.js ├── index.html └── jquery.js /component.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "stickem", 3 | "version": "1.4.1", 4 | "main": "./jquery.stickem.js", 5 | "dependencies": { 6 | "jquery": "~1.8.1" 7 | } 8 | } 9 | -------------------------------------------------------------------------------- /screen.css: -------------------------------------------------------------------------------- 1 | * { 2 | margin: 0; 3 | padding: 0; 4 | } 5 | 6 | body { 7 | font: 14px/1.5 Helvetica, Arial, sans-serif; 8 | } 9 | 10 | .container { 11 | margin: 20px auto; 12 | width: 960px; 13 | } 14 | 15 | .row { 16 | border-bottom: 1px solid #ccc; 17 | margin-bottom: 40px; 18 | padding-bottom: 40px; 19 | position: relative; 20 | } 21 | 22 | .row:after { 23 | clear: both; 24 | content: "."; 25 | display: block; 26 | height: 0; 27 | visibility: hidden; 28 | } 29 | 30 | .content { 31 | float: left; 32 | width: 640px; 33 | } 34 | 35 | .aside { 36 | background: #cecece; 37 | float: right; 38 | /*padding: 20px;*/ 39 | padding: 0 20px; 40 | width: 260px; 41 | } 42 | 43 | h2 { 44 | font-size: 20px; 45 | } 46 | 47 | p { 48 | margin-bottom: 1.5em; 49 | } 50 | 51 | .stickit { 52 | margin-left: 660px; 53 | position: fixed; 54 | top: 0; 55 | } 56 | 57 | .stickit-end { 58 | bottom: 40px; 59 | position: absolute; 60 | right: 0; 61 | } -------------------------------------------------------------------------------- /LICENSE.md: -------------------------------------------------------------------------------- 1 | The MIT License (MIT) 2 | 3 | Copyright (c) 2014 Trevor Davis 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | Make items sticky as you scroll, to a point. ([See Demo](http://davist11.github.com/jQuery-Stickem/)) 2 | 3 | ## Usage 4 | 5 |
<div class="container">
 6 | 	<div class="row stickem-container">
 7 | 		<div class="content">
 8 | 			Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
 9 | 		</div>
10 | 		
11 | 		<div class="aside stickem">
12 | 		  I'm gonna be sticky!
13 | 		</div>
14 | 	</div>
15 | </div>
16 | 17 |
.stickem-container {
18 |   position: relative;
19 | }
20 | 
21 | .stickit {
22 | 	margin-left: 660px;
23 | 	position: fixed;
24 | 	top: 0;
25 | }
26 | 
27 | .stickit-end {
28 | 	bottom: 40px;
29 | 	position: absolute;
30 | 	right: 0;
31 | }
32 | 33 |
$('.container').stickem();
34 | 35 | ### Defaults 36 | 37 | **item: '.stickem'**
38 | Items that you want to stick on scroll. 39 | 40 | **container: '.stickem-container'**
41 | Container that you want the sticky item to be contained in. 42 | 43 | **stickClass: 'stickit'**
44 | Class added to the sticky item once it should start being sticky. 45 | 46 | **endStickClass: 'stickit-end'**
47 | Class added to the sticky item once it has reached the end of the container 48 | 49 | **offset: 0**
50 | Do you already have a fixed horizontal header on the page? Offset stick 'em by that many pixels. 51 | 52 | **start: 0**
53 | If your sticky item isn't at the top of the container, tell it where it should start being sticky. 54 | 55 | **onStick: null**
56 | You can create a callback function that fires when an item gets "stuck". The item gets passed back. 57 | 58 | **onUnstick: null**
59 | You can create a callback function that fires when an item gets "un-stuck". The item gets passed back. 60 | 61 | ### Destroying 62 | 63 | If you have a bunch of stuff that happens after your page has loaded (e.g. AJAX requests) that changes the height of your containers and page, and you need to "destroy" stick 'em, do it like this: 64 | 65 |
var sticky = $('.container').stickem();
66 | sticky.destroy();
67 | 68 | Then you can re-instantiate again if you need to. -------------------------------------------------------------------------------- /jquery.stickem.js: -------------------------------------------------------------------------------- 1 | /** 2 | * @name jQuery Stick 'em 3 | * @author Trevor Davis 4 | * @version 1.4.1 5 | * 6 | * $('.container').stickem({ 7 | * item: '.stickem', 8 | * container: '.stickem-container', 9 | * stickClass: 'stickit', 10 | * endStickClass: 'stickit-end', 11 | * offset: 0, 12 | * onStick: null, 13 | * onUnstick: null 14 | * }); 15 | */ 16 | 17 | ;(function($, window, document, undefined) { 18 | 19 | var Stickem = function(elem, options) { 20 | this.elem = elem; 21 | this.$elem = $(elem); 22 | this.options = options; 23 | this.metadata = this.$elem.data("stickem-options"); 24 | this.$win = $(window); 25 | }; 26 | 27 | Stickem.prototype = { 28 | defaults: { 29 | item: '.stickem', 30 | container: '.stickem-container', 31 | stickClass: 'stickit', 32 | endStickClass: 'stickit-end', 33 | offset: 0, 34 | start: 0, 35 | onStick: null, 36 | onUnstick: null 37 | }, 38 | 39 | init: function() { 40 | var _self = this; 41 | 42 | //Merge options 43 | _self.config = $.extend({}, _self.defaults, _self.options, _self.metadata); 44 | 45 | _self.setWindowHeight(); 46 | _self.getItems(); 47 | _self.bindEvents(); 48 | 49 | return _self; 50 | }, 51 | 52 | bindEvents: function() { 53 | var _self = this; 54 | 55 | _self.$win.on('scroll.stickem', $.proxy(_self.handleScroll, _self)); 56 | _self.$win.on('resize.stickem', $.proxy(_self.handleResize, _self)); 57 | }, 58 | 59 | destroy: function() { 60 | var _self = this; 61 | 62 | _self.$win.off('scroll.stickem'); 63 | _self.$win.off('resize.stickem'); 64 | }, 65 | 66 | getItem: function(index, element) { 67 | var _self = this; 68 | var $this = $(element); 69 | var item = { 70 | $elem: $this, 71 | elemHeight: $this.height(), 72 | $container: $this.parents(_self.config.container), 73 | isStuck: false 74 | }; 75 | 76 | //If the element is smaller than the window 77 | if(_self.windowHeight > item.elemHeight) { 78 | item.containerHeight = item.$container.outerHeight(); 79 | item.containerInner = { 80 | border: { 81 | bottom: parseInt(item.$container.css('border-bottom'), 10) || 0, 82 | top: parseInt(item.$container.css('border-top'), 10) || 0 83 | }, 84 | padding: { 85 | bottom: parseInt(item.$container.css('padding-bottom'), 10) || 0, 86 | top: parseInt(item.$container.css('padding-top'), 10) || 0 87 | } 88 | }; 89 | 90 | item.containerInnerHeight = item.$container.height(); 91 | item.containerStart = item.$container.offset().top - _self.config.offset + _self.config.start + item.containerInner.padding.top + item.containerInner.border.top; 92 | item.scrollFinish = item.containerStart - _self.config.start + (item.containerInnerHeight - item.elemHeight); 93 | 94 | //If the element is smaller than the container 95 | if(item.containerInnerHeight > item.elemHeight) { 96 | _self.items.push(item); 97 | } 98 | } else { 99 | item.$elem.removeClass(_self.config.stickClass + ' ' + _self.config.endStickClass); 100 | } 101 | }, 102 | 103 | getItems: function() { 104 | var _self = this; 105 | 106 | _self.items = []; 107 | 108 | _self.$elem.find(_self.config.item).each($.proxy(_self.getItem, _self)); 109 | }, 110 | 111 | handleResize: function() { 112 | var _self = this; 113 | 114 | _self.getItems(); 115 | _self.setWindowHeight(); 116 | }, 117 | 118 | handleScroll: function() { 119 | var _self = this; 120 | 121 | if(_self.items.length > 0) { 122 | var pos = _self.$win.scrollTop(); 123 | 124 | for(var i = 0, len = _self.items.length; i < len; i++) { 125 | var item = _self.items[i]; 126 | 127 | //If it's stuck, and we need to unstick it, or if the page loads below it 128 | if((item.isStuck && (pos < item.containerStart || pos > item.scrollFinish)) || pos > item.scrollFinish) { 129 | item.$elem.removeClass(_self.config.stickClass); 130 | 131 | //only at the bottom 132 | if(pos > item.scrollFinish) { 133 | item.$elem.addClass(_self.config.endStickClass); 134 | } 135 | 136 | item.isStuck = false; 137 | 138 | //if supplied fire the onUnstick callback 139 | if(_self.config.onUnstick) { 140 | _self.config.onUnstick(item); 141 | } 142 | 143 | //If we need to stick it 144 | } else if(item.isStuck === false && pos > item.containerStart && pos < item.scrollFinish) { 145 | item.$elem.removeClass(_self.config.endStickClass).addClass(_self.config.stickClass); 146 | item.isStuck = true; 147 | 148 | //if supplied fire the onStick callback 149 | if(_self.config.onStick) { 150 | _self.config.onStick(item); 151 | } 152 | } 153 | } 154 | } 155 | }, 156 | 157 | setWindowHeight: function() { 158 | var _self = this; 159 | 160 | _self.windowHeight = _self.$win.height() - _self.config.offset; 161 | } 162 | }; 163 | 164 | Stickem.defaults = Stickem.prototype.defaults; 165 | 166 | $.fn.stickem = function(options) { 167 | //Create a destroy method so that you can kill it and call it again. 168 | this.destroy = function() { 169 | this.each(function() { 170 | new Stickem(this, options).destroy(); 171 | }); 172 | }; 173 | 174 | return this.each(function() { 175 | new Stickem(this, options).init(); 176 | }); 177 | }; 178 | 179 | })(jQuery, window , document); 180 | -------------------------------------------------------------------------------- /index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | jQuery Stick 'em 5 | 6 | 7 | 8 | 9 |
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57 |
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