Domツリーのロード後に実行、jQueryのready
(function(){
var isReady=false;// onDOMReady
var readyList= [];//
var timer;//
ready=function(fn) {
if (isReady )
fn.call( document);
else
readyList.push( function() { return fn.call(this);});
return this;
}
var onDOMReady=function(){
for(var i=0;i<readyList.length;i++){
readyList[i].apply(document);
}
readyList = null;
}
var bindReady = function(evt){
if(isReady) return;
isReady=true;
onDOMReady.call(window);
if(document.removeEventListener){
document.removeEventListener("DOMContentLoaded", bindReady, false);
}else if(document.attachEvent){
document.detachEvent("onreadystatechange", bindReady);
if(window == window.top){
clearInterval(timer);
timer = null;
}
}
};
if(document.addEventListener){
document.addEventListener("DOMContentLoaded", bindReady, false);
}else if(document.attachEvent){
document.attachEvent("onreadystatechange", function(){
if((/loaded|complete/).test(document.readyState))
bindReady();
});
if(window == window.top){
timer = setInterval(function(){
try{
// IE doScroll dom
isReady||document.documentElement.doScroll('left');
}catch(e){
return;
}
bindReady();
},5);
}
}
})();
次の操作を行います.
1、ready(fun);//funは方法がある
2、ready(function(){alert(1)})