<!DOCTYPE html>
<html leng = 'en'>
<head>
<meta charset = 'UTF-8'/>
<style></style>
</head>
<body>
<div>
<i></i>
<b></b>
<span></span>
</div>
<p></p>
<!--<div>
<a></a>
<em></em>
</div>-->
<script>
var i = document.getElementsByTagName('i')[0];
var b = document.getElementsByTagName('b')[0];
var p = document.getElementsByTagName('p')[0];
var span = document.getElementsByTagName('span')[0];
var div = document.getElementsByTagName('div')[0];
Element.prototype.insertAfter = function(a, b){
if(a.nextElementSibling === null){
a = a.nextSibling;
}else{
a = a.nextElementSibling;
}
this.insertBefore(b, a);
}
div.insertAfter(span, p);
/*var em = document.getElementsByTagName('em')[0];
var a = document.getElementsByTagName('a')[0];
Element.prototype.insertAfter = function(a, b){
//a = a.nextElementSibling;
this.insertBefore(b, a);
}
var div = document.getElementsByTagName('div')[0];
div.insertAfter(a, em);*/
</script>
</body>
</html>
js write package function insertAfter()
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Origin blog.csdn.net/weixin_48727085/article/details/107758445
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