获取某个dom元素上面都绑定了哪些事件 包括addEventLi
2020-04-21 本文已影响0人
cooqi
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script>
EVENT_LIST = new Array();
_addEventListener = Element.prototype.addEventListener;
Element.prototype.addEventListener = function(event,fn) {
EVENT_LIST.push({"event": event, "element": this})
console.log(EVENT_LIST,fn)
_addEventListener.apply(this, arguments);
};
</script>
</head>
<body>
<div onclick="a()" id="test">123</div>
<script>
document.getElementById("test").addEventListener("click", function(){
a();
});
function a(){
alert(1)
}
</script>
</body>
</html>
