刷新页面前的提示

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 function addHandler( type, handle){
if (window.addEventListener) {
return ele.addEventListener(type,handle,false);
}else if (window.attachEvent) { // 兼容IE
return window.attachEvent("on"+type,handle);
}else{
return window["on"+type] = handle;
};
}

addHandler("beforeunload",function(e){
e = e || window.event;
var mes = "要关闭我么?"
e.returnValue = mes;
return mes;
})