Javascript help

zkissane · **Posted:** Tue 11-07-2006 3:30PM

I have an iframe. Here is its source, zak_iframe.htm :

Code:

<html>
<head>
<script type="text/javascript">
var my_var = 42;
var another_var = my_var;
</script>
</head>
<body>

<p>Hello, world! <br/>
<script type="text/javascript">

document.write("My value is " + my_var + "<br />");
document.write("another_var value is " + another_var);
</script>
</p> 
</body>
</html>

Here is its parent, zak_outer_frame.htm :

Code:

<html>
<head>
<script type="text/javascript">
function print_value() {
try {
      document.write("Inside javascript in main page <br/>");
      var target_value = //???---This is what I don't know---???//
      document.write("My iframes value is " + target_value);
   }
catch(err) {
   txt="Error description: " + err + "\n\n"
   alert(txt)
   }
}
</script>
</head>
<body>
<p>
<iframe src="zak_iframe.htm" title="zak" name="zak" id="zak">

</iframe> 
</p>
<p>
<br/>
<script type="text/javascript">
print_value();
</script>
</p>
</body>
</html>

I want to set target_value (which lives in the parent) to my_var (which lives in the iframe). I've tried many different ways. Sometimes the output is blank, sometimes the output is "My iframes value is undefined " and sometimes the output is "My iframes value is null" depending on what I've tried. I've tried:

Code:

var target_value = frames['zak'].document.my_var;

Code:

var target_value = frames["zak"].document.getElementById("my_var")

Code:

var target_value = frames["zak"].window['my_var']

all with no success. What am I doing wrong?

Javascript help

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