js返回上一步的等方法整理

<a href="javascript:history.go(-1)">返回上一页</a> 
<a href="javascript:location.reload()">刷新当前页面</a> 
<a href="javascript:" onclick="history.go(-2); ">返回前两页</a> 
<a href="javascript:" onclick="self.location=document.referrer;">返回上一页并刷新</a> 
<a href="javascript:" onclick="history.back(); ">返回上一页</a>