原型应用, HTMLElement ,给所有HTML元素都添加一个新方法
DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Documenttitle>
head>
<body>
<div id="a">aaaaaadiv>
<div id="b">bbbbbbdiv>
<script type="text/javascript">
HTMLElement.prototype.remove = function(){
if (this.parentNode){
this.parentNode.removeChild(this);
};
};
var a = document.getElementById("a");
a.parentNode.removeChild(a);
//
document.getElementById("b").remove();
script>
body>
html>