关于在跳转页面以前使用<script>alert</script>

Question

方案1:Response.Write("<script>alert('dsafasdf');</script>");
Response.Redirect("webform2.aspx");结果:直接跳转,alert没反映方案2:Response.Write("<script>alert('dsafasdf');</script>");
Response.Write("<script>window.location.href='webform2.aspx'</script>");结果:alert出现,关闭以后成功跳转
问题:为什么方案1中的alert不执行???

Answer 1

你看看：
http://topic.csdn.net/t/20040607/23/3072128.html

Answer 2

Response.Write("<script>alert('dsafasdf');top.location.href='webform2.aspx'</script>");