App下载
实例代码( Tip: 登录后体验更佳 )
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool</title>
<script src="//libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("#btn1").click(function(){
$("p").prepend("<b></b> ");
});
$("#btn2").click(function(){
$("ol").prepend("<li></li>");
});
});
</script>
</head>
<body>
<p></p>
<p></p>
<ol>
<li> 1</li>
<li> 2</li>
<li> 3</li>
</ol>
<button id="btn1"></button>
<button id="btn2"></button>
</body>
</html>
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运行结果