Detect if a page is inside an iframe or escape from one

July 15, 2010

What happens if your page get found on Google but it should be inside an iframe? For me the answer was simple, detect if you’re inside an iframe and if not redirect to the destination you want.

To find out if you’re in an iframe you can get the number of frames from the parent window. If the number of frames if less than 0, you’re not in an iframe and you need to redirect. The same principle can be used to escape from an iframe.

if ( window.parent.frames.length>0 )  {}  // check how many frames, if none do nothing
  window.location="[new destination]";  // else change the current location 
Filed under: Programming — Tags: , — admin @ 8:49 pm

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Jonathan Spicer


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