事件物件相容寫法
// 新增控制代碼
addHandler:function(element,type,handler){
if(element.addEventListener){
element.addEventListener(type,handler,false);
}else if(element.attachEvent){
element.attachEvent('on'+type,handler);
}else{
element['on'+type]=handler;
}
},
// 刪除控制代碼
removeHandler:function(element,type,handler){
if(element.removeEventListener){
element.removeEventListener(type,handler,false);
}else if(element.detachEvent){
element.detachEvent('on'+type,handler);
}else{
element['on'+type]=null;
}
},
//獲取事件物件
getEvent:function(event){
return event?event:window.event;
},
//型別
getType:function(event){
return event.type;
},
//元素
getElement:function(event){
return event.target || event.srcElement;
},
//阻止預設
preventDefault:function(event){
if(event.preventDefault){
event.preventDefault();
}else{
event.returnValue=false;
}
},
//阻止冒泡
stopPropagation:function(event){
if(event.stopPropagation){
event.stopPropagation();
}else{
event.cancelBubble=true;
}
}