abstract：<!DOCTYPE html><html><head> <meta charset="utf-8"> <title>jQuery操作属性的方法</title> <script type="text/javascript"src='jquery-3.3.1.js'&g
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>jQuery操作属性的方法</title>
<script type="text/javascript"src='jquery-3.3.1.js'></script>
<style type="text/css">
.bb{color:red;}
</style>
</head>
<body>
<script type="text/javascript">
$(document).ready(function(){
$('button').click(function(){
$('span,b,p').toggleClass('bb')
})
})
</script>
<span>大家好 我是小师太</span><br>
<b>欢迎来到</b>
<p>PHP中文网</p>
<button>点击切换</button>
</body>
</html>