Created
March 31, 2011 16:09
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jquery.requreCss.js
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| <!doctype html> | |
| <html lang="en" class="no-js"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> | |
| <title>jQuery.requireCss</title> | |
| <meta name="description" content=""> | |
| <script src="//ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script> | |
| <script src="jquery.requreCss.js"></script> | |
| <script> | |
| /* use like this */ | |
| $.requireCss('style1.css', 'all'); | |
| $.requireCss('style2.css'); | |
| $.requireCss('style3.css'); | |
| $.requireCss('style4.css'); | |
| /* more requests to each css are ignored. */ | |
| $.requireCss('style2.css'); | |
| $.requireCss('style3.css'); | |
| $.requireCss('style2.css'); | |
| $.requireCss('style2.css'); | |
| $.requireCss('style3.css'); | |
| </script> | |
| </head> | |
| <body> | |
| <h1>jQuery.requireCss</h1> | |
| <p><button onclick="$.requireCss('style5.css');">$.requireCss('style5.css');</button></p> | |
| <div id="div1">#div1</div> | |
| <div id="div2">#div2</div> | |
| <div id="div3">#div3</div> | |
| <div id="div4">#div4</div> | |
| <div id="div5">#div5</div> | |
| </body> | |
| </html> |
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| /*! | |
| * $.requireCss | |
| * https://gist.github.com/896667 | |
| * is a stylesheet loader | |
| * author: Takeshi Takatsudo (takazudo[at]gmail.com) | |
| * upate: 2011/04/01 | |
| * version: 1 | |
| */ | |
| (function($, undefined){ | |
| /* elements */ | |
| var $head = $('head'); | |
| /* css preest collection */ | |
| var collection = (function(){ | |
| var o = {}; | |
| var _presets = []; | |
| o.register = function(preset){ | |
| if(o.has(preset)){ | |
| return o; | |
| } | |
| _presets.push(preset); | |
| return o; | |
| }; | |
| o.has = function(preset){ | |
| return $.grep(_presets, function(current){ | |
| return (current.href === preset.href) && (current.media === preset.media); | |
| }).length ? true : false; | |
| }; | |
| return o; | |
| })(); | |
| /* public */ | |
| $.requireCss = function(href, media){ | |
| media = media || 'all'; | |
| var preset = { | |
| href: href, | |
| media: media | |
| }; | |
| if(collection.has(preset)){ | |
| return $; | |
| } | |
| var link = document.createElement('link'); | |
| link.type = "text/css"; | |
| link.rel = "stylesheet"; | |
| link.href = href; | |
| link.media = media; | |
| $head[0].appendChild(link); | |
| return $; | |
| }; | |
| })(jQuery); // end of encapsulation |
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| #div1{ border:3px solid red; } |
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| #div2{ border:3px solid orange; } |
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| #div3{ border:3px solid blue; } |
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| #div4{ border:3px solid purple; } |
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| #div5{ border:3px solid navy; } |
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