在Javascript中检测iFrame嵌入 [英] Detect iFrame embedding in Javascript

问题描述

我有一个具有特定页面的应用程序 - 让我们称之为页面A.页面A有时是顶级页面，但有时也会嵌入到页面B中的iframe中。所有页面都来自同一台服务器并且没有跨域问题。

I have an application that has a certain page -- let's call it Page A. Page A is sometimes a top-level page, but also sometimes is embedded as an iframe within page B. All pages come from the same server and there are no cross-domain issues.

我有一个在页面A上运行的greasemonkey脚本.illipmonkey脚本如何检测页面A是否在iframe上下文中？

I have a greasemonkey script that runs on page A. How can the greasemonkey script detect whether page A is within the iframe context or not?

推荐答案

如果页面A本身有框架（我知道这可能不是这种情况）具体实例）。更可靠和有意义的测试将是：

Looking at frame length breaks down generally if page A itself has frames (I know this might not be the case for this specific instance). The more reliable and meaningful test would be:

if (window!=window.top) { /* I'm in a frame! */ }

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