├── manifest.json
└── background.js


/manifest.json:
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 1 | {
 2 |   "name": "brooklyn JS",
 3 |   "version": "0.0.1",
 4 |   "manifest_version": 2,
 5 | 
 6 |   "permissions": [
 7 |     "alarms",
 8 |     "http://brooklynjs.com/"
 9 |   ],
10 | 
11 |   "browser_action": {},
12 |   "background": {
13 |     "scripts": ["background.js"]
14 |   }
15 | }
16 | 
17 | 


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/background.js:
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 1 | chrome.alarms.onAlarm.addListener(function () {
 2 |   var request = new XMLHttpRequest();
 3 |   request.onload = function () {
 4 |     var match = request.responseText.match(/new Date\((\d+),(\d+),(\d+)\)/);
 5 |     var date = new Date(match[1], match[2], match[3], 19);
 6 |     var diff = date - Date.now();
 7 |     var days = Math.floor(diff / (24 * 60 * 60 * 1000));
 8 |     chrome.browserAction.setBadgeText({ text: days.toString() });
 9 |     chrome.browserAction.setBadgeBackgroundColor({ color: days ? '#00ff00' : '#ff0000' });
10 |   };
11 |   request.open('get', 'http://brooklynjs.com/');
12 |   request.send();
13 | });
14 | 
15 | chrome.alarms.create('request', { when: Date.now(), periodInMinutes: 60 });
16 | 


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