<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>each</title>
</head>
<body>
<ul>
<li>序号：1</li>
<li>名称：水密码吸附水</li>
<li>数量：1</li>
<li>价格：89</li>
</ul>
<button id="btn">点击查看效果</button>
</body>
<script type="text/javascript" src="jquery-1.8.3.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#btn").click(function(){
$("ul").each(function(index,element){
alert($(element).text());
})
})
})
</script>
</html>
来源：https://www.cnblogs.com/shoolnight/p/6515615.html