![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<a href="www.sina.com" id='gg' data-zidingyi="ziji">公告</a>
</body>
</html>
<!-- 引入jquery -->
<script type="text/javascript" src="../jquery-3.3.1.js"></script>
<script type="text/javascript">
// 锁定目标
var res=$('a').attr()
// 将目标的属性值修改
var res = $('#gg').attr('href','wwww.baidu.com')
var res = $('#gg').attr('data-zidingyi')
// 移除属性值removeAttr
$('#gg').removeAttr('style')
var res = $('#gg').removeAttr('alt title data-zidingyi')
</script>点击 "运行实例" 按钮查看在线实例
