以下脚本嵌入在<meta>
标记正下方的html页面的head部分。任何人都可以解释将这么长的脚本放在头部没有内容的目的是什么?
<script type="text/javascript">
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</script>
<script type="text/javascript">
if (top.location != self.location)
top.location = self.location;
</script>
答案 0 :(得分:3)
这是指帧破坏代码。它将框架文档分解为顶层。
top.location != self.location
当前文档不在窗口的顶层(例如,它位于框架或iframe中)。
并且,top.location = self.location;
将当前URL设置为窗口的顶层 - 从而将其从任何帧中分离出来并将其移动到窗口的顶层。
这是由希望阻止陷害的网站完成的。您可以阅读更详细的说明here。
现代浏览器支持使用X-Frame-Options标头防止框架的更新方法。请参阅说明here。
答案 1 :(得分:0)
第一个脚本是New Relic Browser监控,使他们能够查看页面加载时间等。这是几年前有人对此进行研究的帖子,new relic message board post
如果要删除它,则需要修改“ New Relic”配置文件,或修改其加载方式/加载时间。我发现this资源对于删除它很有用。
在批准的答案中准确讨论了第二个脚本。