jQuery如何监听浏览器 关闭、刷新、回退事件
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https://blog.csdn.net/wuhounuanyangzhao/article/details/93004428
可以参考这个
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
</head>
<body>
<div style="background-color:#ccc">
<a href="#">dsadsadddsadsad</a>
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.5.1/jquery.js"></script>
<script type="text/javascript">
$(window).on('beforeunload unload', function() {
alert('正在编辑。。。');
});
</script>
</body>
</html>
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