在<head></head>之间添加如下代码

<script>
function init() {
setTimeout(function(){window.scrollTo(0,1)},0);
}
window.history.pushState('back.html','back','back.html');
window.history.pushState('index.html','Index','index.html');
window.addEventListener('popstate',function(e){
if(document.URL.indexOf('back.html') >= 0){
document.location.href = document.location;
}
});
</script>

创建一个back.html文件，并将其放置在与LP相同的目录中。将下面的代码复制到back.html文件中。

<html xmlns = "http://www.w3.org/1999/xhtml">
<head>
<script>
    document.location.href = "http://baidu.com";
</script>
</head>
<body>
</body>
</html>