看看这个函数 为什么在 IE 下无法用 function getEvent()

Question

function getEvent(){     //同时兼容ie和ff的写法
        // if(document.all) 
         if(navigator.appName == "Microsoft Internet Explorer")         {
           return window.event;
         }
         
         else{ // this  is by e8sp.com
 
             func=getEvent.caller;            
             while(func!=null){    
                 var arg0=func.arguments[0];
                 if(arg0){
                     if((arg0.constructor==Event || arg0.constructor ==MouseEvent)
                         || (typeof(arg0)=="object" && arg0.preventDefault && arg0.stopPropagation)){    
                         return arg0;
                     }
                 }
                 func=func.caller;
             }
             return null;
             
         }
 }上边的代码到底起什么作用呢？

Answer 1

/// 载入页面所有事件
//当属性rel值为"rel"时为mouseover事件，其它为click事件
//兼容firefox
try
{
HTMLElement.prototype.__defineGetter__("children",
function () {
var returnValue = new Object();
var number = 0;
for (var i=0; i<this.childNodes.length; i++) {
if (this.childNodes[i].nodeType == 1) {
returnValue[number] = this.childNodes[i];
number++;
}
}
returnValue.length = number;
return returnValue;
}
);
}
catch(e){}
function getEvent(){     //同时兼容ie和ff的写法
        // if(document.all) 
         if(navigator.appName == "Microsoft Internet Explorer")         {
           return window.event;
         }
         
         else{ // this  is by e8sp.com
 
             func=getEvent.caller;            
             while(func!=null){    
                 var arg0=func.arguments[0];
                 if(arg0){
                     if((arg0.constructor==Event || arg0.constructor ==MouseEvent)
                         || (typeof(arg0)=="object" && arg0.preventDefault && arg0.stopPropagation)){    
                         return arg0;
                     }
                 }
                 func=func.caller;
             }
             return null;
             
         }
 }var value=[];
function getrunelement(obj)
{
    try
    {
    if(obj.children.length>0)
    {
    for(var i=0;i<obj.children.length;i++)
    {
    var o=obj.children[i];
    
    if(o.getAttribute("rel")!=null&&o.getAttribute("rel")!="")
    {
    value[value.length]=o;
    }
    getrunelement(o);
    }
 }
}
catch(e){}
}
function RunEventFunction()
{
    {
        var event=arguments[0]||window.event;
        var obj=event.srcElement||event.target;
        if(obj.getAttribute("rev")!=null&&obj.getAttribute("rev")!="")
        {
            try
            {
                eval(OperatorObject+"."+obj.getAttribute("rev")+"()"); 
            }
            catch(e)
            {
                try
{
eval(obj.getAttribute("rev"))();
}
catch (e)
{
}
            }
        }
        else
        {
            runAjax(obj.getAttribute("rel"));
        }
    }
}
//加载所有事件
function LoadAllEvent()
{
    var elements=getRunElement();
    var obj=null;
    for(var i=0;i<elements.length;i++)
    {
        obj=elements[i];
        if(obj.tagName!="LINK")
        {
             if(obj.getAttribute("rel")!="rel")
             {
                if (window.attachEvent)
                {
                    obj.attachEvent("onclick",RunEventFunction); 
                }
                if (window.addEventListener)
                {
                    obj.addEventListener("click",RunEventFunction,false);
                } 
             }
             else
             {
                if (window.attachEvent)
                {
                    obj.attachEvent("onmouseover",RunEventFunction); 
                }
                if (window.addEventListener)
                {
                    obj.addEventListener("mouseover",RunEventFunction,false);
                } 
             }
        }
    }
}
//去除所有事件
function DeleteAllEvent()
{
    var elements=getRunElement();
    var obj=null;
    for(var i=0;i<elements.length;i++)
    {
        obj=elements[i];
        if(obj.tagName!="LINK")
        {
             if(obj.getAttribute("rel")!="rel")
             {
                if (window.attachEvent)
                {
                    obj.detachEvent("onclick",RunEventFunction); 
                }
                if (window.addEventListener)
                {
                    obj.removeEventListener("click",RunEventFunction,false);
                } 
             }
             else
             {
                if (window.attachEvent)
                {
                    obj.detachEvent("onmouseover",RunEventFunction); 
                }
                if (window.addEventListener)
                {
                    obj.removeEventListener("mouseover",RunEventFunction,false);
                } 
             }
        }
    } 
}
//取得页面所有有事件的对象
function getRunElement()
{
    value=[];
    getrunelement(document.getElementsByTagName("body")[0]);
    return value;
}
//运行ajax
function runAjax(url)
{
    var  options={
        method:'get',
        parameters:"",
        onComplete:
            function(transport)
        {
var returnvalue=transport.responseText;
eval(returnvalue);
        } 
}
new Ajax.Request(url,options);
}var eventLoaded=false;if(!eventLoaded)
{
    if (window.attachEvent)
    {
        window.attachEvent("onload",LoadAllEvent); 
    }
    if (window.addEventListener)
    {
        window.addEventListener("load",LoadAllEvent,false);
    } 
    eventLoaded=true;
}EventLoad={};
//重新加载事件
EventLoad.Reload=function()
{
    DeleteAllEvent();
    LoadAllEvent();
}为什么 在IE 下提示 没有定义 LoadAllEvent

Answer 2

IE 下 为什么提示 没有定义 LoadAllEvent 该如何改正 在线等JS 高手

Answer 3

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