How can you check if your document is opened in an IFrame?

问题

Is there a way to know if your page is opened inside of an IFrame?

An idea I had was to see if the window object has a .parent property, but this apparently is also true of standalone windows which are opened by Javascript's window.open() function.

回答1:

if (window.top != window.self)
 {
}

来源：https://stackoverflow.com/questions/3918815/how-can-you-check-if-your-document-is-opened-in-an-iframe