通过ocalStorage.getItem和setItem来实现，代码如下：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum=1.0,minimum=1.0,user-scalable=0" />
<title>BFW NEW PAGE</title>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/jquery.17.js"></script>
<style>
#notice{
width: 100px;
position: fixed;
padding: 10px;
top:30%;
left: 40%;
height: 60px;
background: white;
display: none;
}
</style>
</head>
<body>
<div id="notice">
新手提示
</div>
<script>
$(function(){
var isshow = localStorage.getItem('isshow');
if (isshow== null) {
localStorage.setItem('isshow', 1);
// Show popup here
$('#notice').show();
}
else{
}
});
</script>
</body>
</html>
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