Created
June 11, 2010 02:36
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[JavaScript] 関数遅延実行
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/** | |
* 関数遅延実行 | |
*/ | |
deferred=(function(){ | |
var _w=window,_d=window.document; | |
var deferred_default=function(func){_w.setTimeout(function(){func()},0);}; | |
var deferred_faster_way_readystatechange=((location.protocol==="http:")&&!_w.opera&&/\bMSIE\b/.test(navigator.userAgent))&&function(func){ | |
var script = _d.createElement("script"); | |
script.type = "text/javascript"; | |
script.src = "javascript:"; | |
script.onreadystatechange=function(){func()}; | |
}; | |
var deferred_faster_way_Image=((typeof(Image)!=="undefined")&&_d.addEventListener)&&function(func){ | |
var img = new Image(); | |
var handler=function(){func();}; | |
img.addEventListener("load", handler, false); | |
img.addEventListener("error", handler, false); | |
img.src = "data:,/ _ / X"; | |
}; | |
return deferred_faster_way_readystatechange||deferred_faster_way_Image||deferred_default; | |
})(); |
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