JS_删除子元素 笔记
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>js_删除子元素</title>
<script type="text/javascript">
function del(){
var lis=document.getElementsByTagName('li');
var last=lis[lis.length-1];
last.parentNode.removeChild(last);
}
</script>
</head>
<body>
<button type="button" onclick="del();">删除最后一个li</button>
<ul>
<li>一</li>
<li>二</li>
<li>三</li>
<li>四</li>
</ul>
</body>
</html>
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