Can't get content of the iframe node

dareno · #1 11-20-2009, 11:04 AM

I want to display content of the iframe node <mydata>. But it not works, it just display empty message. I work on IE8.
My code:

Code:

<html>
<head>
<script type="text/javascript">
function show() {
  var v = window.frames['IF'].document.body.innerHTML;  //gives empty message
//var v = window.frames['IF'].document.getElementById('MY').firstChild.nodeValue;   //gives error
  alert(v);
}
</script>
</head>

<body>
<form>
<input type="button" value="but" onclick="show()" />
</form>

<iframe name="IF" id="IF">
<html>
<body> 
<mydata id="MY">ala </mydata>
</body>
</html>

</iframe>
</body>
</html>

dareno · #2 11-20-2009, 11:10 AM

I tried also :
var v = window.frames['IF'].mydata; //gives undefined
var v = window.frames['IF'].MY; //gives undefined

**Kor** · #3 11-20-2009, 11:11 AM

I guess you missed the way IFRAME element works:
http://www.w3schools.com/TAGS/tag_iframe.asp
An IFRAME loads and displays another HTML file into the document

dareno · #4 11-20-2009, 02:58 PM

This code is just an example. My program is a servlet and the iframe src is redirected to server with get method. Iframe body is filled by server response. I need to display this response from javascript, so i need to display iframe body.

**Kor** · #5 11-21-2009, 01:34 AM

Quote:

Originally Posted by dareno

This code is just an example.

Example of what? I see no SRC attribute inside that IFRAME. The way you have written, everything you coded inside <iframe></iframe> is invisible for modern browsers. If you give an example, give a realistic example.

For JavaScript, the accuracy of the HTML code is vital. We need to see what JavaScript sees, and JavaScript sees what the browser shows like on View Source.

criterion9 · #6 11-21-2009, 08:23 PM

It sounds like a backwards way to do AJAX requests. Is there a reason you are using iframes instead of AJAX?

dareno · #7 11-23-2009, 04:18 AM

Quote:

Originally Posted by criterion9

It sounds like a backwards way to do AJAX requests. Is there a reason you are using iframes instead of AJAX?

You are right criterion9. But I am pl/sql programmer and now I have to write web application and I don't know java script - I didn't know I can use something like AJAX.
Previously I tried this method: http://www.ibm.com/developerworks/we...rel/index.html

Now I used AJAX as you suggested an it works. Thanks.

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