App下載
實(shí)例代碼( Tip: 登錄后體驗(yàn)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(){
$("button").click(function(){
$("p").toggleClass("main");
});
});
</script>
<style>
.main{
font-size:120%;
color:red;
}
</style>
</head>
<body>
<button>P"main"</button>
<p></p>
<p></p>
<p><b>:</b></p>
</body>
</html>
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