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| // ==UserScript== | |
| // @name defer/async for Opera | |
| // @namespace http://d.hatena.ne.jp/edvakf/ | |
| // @license Public Domain | |
| // ==/UserScript== | |
| (function(window, document, opera) { | |
| function load_script(script, attr) { | |
| return function() { | |
| var script2 = script.cloneNode(true); | |
| script2.removeAttribute(attr); | |
| script.parentNode.insertBefore(script2, script); | |
| script.parentNode.removeChild(script); | |
| }; | |
| } | |
| var asyncSupport = 'async' in document.createElement('script'); | |
| // support async and defer | |
| opera.addEventListener('BeforeExternalScript', function(e) { | |
| var script = e.element; | |
| if (!asyncSupport && script.hasAttribute('async')) { | |
| setTimeout(load_script(script, 'async'), 10); | |
| return e.preventDefault(); | |
| } | |
| if (script.hasAttribute('defer') && document.readyState != 'complete') { | |
| window.addEventListener('load', load_script(script, 'defer'), false); | |
| return e.preventDefault(); | |
| } | |
| }, false); | |
| })(this, this.document, this.opera); |
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