Event兼容性代码,按照W3C标准兼容:
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var
fixEvent = function(e){
e = e || window.event;
if(!e.preventDefault){
e.preventDefault = function(){
event.returnValue = false;
};
}
if(!e.stopPropagation){
e.stopPropagation = function(){
event.cancelBubble = true;
};
}
if(e.pageX === undefined && e.pageY === undefined){
var
doc =document.documentElement || document.body;
e.pageX = e.clientX + doc.scrollLeft - doc.clientLeft;
e.pageY = e.clientY + doc.scrollTop - doc.clientTop;
}
if(!e.target){
e.target = e.srcElement;
}
return
e;
};
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