<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>弹框</title>
<script type="text/javascript" src="js/jquery-3.3.1.min.js"></script>
<script type="text/javascript" src="js/jquery.cookie.js"></script>
<script type="text/javascript">
$(function(){ ???var $befread = $.cookie(‘befread‘); ???//alert($befread);判断是否存储过 ???if($befread == undefined){ ???????$(‘.pop_con‘).show(); /*弹出弹框*/ ???} ???$(‘#user_read‘).click(function(){ ???????/*点击后存储cookie，隐藏*/ ???????$.cookie(‘befread‘,‘read‘,{expires:7,path:‘/‘}); ???????$(‘.pop_con‘).hide(); ???})})</script><style type="text/css">
.pop_con{ ???display: none;}.pop1{ ???width: 300px; ???height: 300px; ???border: 3px solid #000; ???background-color: #87CEF5; ???position: fixed; ???left: 50%; ???top: 50%; ???margin-left: -150px; ???margin-top: -150px; ???z-index: 100;}.pop2{ ???width: 100%; ???height: 100%; ???background-color: #000000; ???opacity: 0.3; ???filter: alpha(opacity=30); ???position: fixed; ???left: 0; ???top: 0; ???z-index: 98;}.close{ ???font-size: 30px; ???text-decoration: none; ???color: red; ???float: right;}</style></head>
<body>
<!--<input type="button" value="点击" class="btn">--><div class="pop_con"> ???<div class="pop1"> ???????亲！你点赞过了 ???????<a href="#" class="close" id="off">x</a> ???????<a href="javascript:;" id="user_read">哟不错哦</a> ???</div> ???<div class="pop2"></div></div><h1>网站内容</h1></body>
</html>
jQuery一次弹框实例
原文地址：http://blog.51cto.com/13742773/2342264