页面跳转不保存历史轨迹
<html><head><title>wow</title><script type="text/javascript">function replaceURL(){//历史记录不被保存，将无法实现‘后退’location.replace('http://www.baidu.com');}</script></head><body><a href="http://www.baidu.com">baidu</a><button onclick="replaceURL()" >replace</button></body></html>