Javascript help

zkissane · November 7, 2006

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

<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 + "
");

document.write("another_var value is " + another_var);

</script>

</p> 

</body>

</html>

Here is its parent, zak_outer_frame.htm :

<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 + "nn"

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:

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

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

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

all with no success. What am I doing wrong?

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Javascript help

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