How can I get an element from within a frameset frame using JavaScript?

I need to access and element from within a frameset frame. For example if I have the following markup:

<frameset rows="33%,33%,*">
  <frame src="frame1.html"/>
  <frame src="frame2.html"/>
  <frame src="frame3.html"/>
</frameset>

How can I get some element from one of开发者_JAVA百科 the child frames? I have tried this:

window.frames[1].getElementById('someElementId')

This results in a type error :

getElementById() is not a function.

Can someone assist?

Thanks!

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You need to get the Document object for the frame.

window.frames[1].document.getElementById('someElementId')

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<frameset rows="33%,33%,*">
<frame id="demo" src="frame1.html"/>
<frame src="frame2.html"/>
<frame src="frame3.html"/>
</frameset>

Answer:

document.getElementById("demo").contentDocument.documentElement.innerHTML;

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You can try using framename as well

window.frames['frame_name'].document.getElementsByName('element_name');