在你的页面的头部加入以下代码
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="wispanh=device-wispanh, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="0">
<script src="//cdn.bootcss.com/jquery/3.1.0/jquery.min.js"></script>
<script src="//cdn.bootcss.com/jquery-cookie/1.4.1/jquery.cookie.min.js"></script>
<script>
$first=$.cookie('first_vist');
if(!$first||$first=='null'||$first==null){
$.cookie('first_vist','1',{ expires: 7 });
}else{
$.cookie('first_vist',null);
location.reload(true);
}
</script>
</head>