how to call a javascript function in the top frame?

Posted by Rory on Stack Overflow See other posts from Stack Overflow or by Rory
Published on 2010-06-18T11:23:29Z Indexed on 2010/06/18 11:33 UTC
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JavaScript

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frames

This seems really simple, but how do I call a javascript function that's defined in the top-level html, from a child frame?

top html doc
 - 1st level frame
    - 2nd level frame

my top html doc has a function called testFn(). In the 2nd level frame I have a button with onclick="top.testFn();" but this doesn't call the testFn(). In Firebug if I use a watch to execute top.testFn(); it says TypeError: testFn() is not a function.

Should this all just work - in which case it's a problem with my documents, or is there some other way to call functions in the top-level window?

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