Accessing Javascript Variables Within An Iframe

If i was to visit the source of my iframe, I notice that it has a value 'srt' , I can access this variable by simply typing 'srt' When in the iframes Source. However when it is an

Solution 1:

You can use the frames collection by index or by the frame's name. Each element in the collection is the window object for that frame, which is where global variables are stored.

frames[0].srt// if there's just oneframes['frameName'].srt// accessing by the name property

Or you can get the iframe element and use contentWindow to retrieve the iframe's window object

document.getElementById('frameId').contentWindow.srt;

Also remember that you can't access a frame that is not in the same domain.

Solution 2:

Assuming the iframe has an id frame, from the parent:

var innerValue = document.getElementById('frame').contentWindow['srt'];

Or the other way round, from within the iframe:

parent.iframeValue = srt;