How to post data to window opener

wjenkins · August 29th, 2003, 04:03 PM

Hi;
I've got a window in a frame that opens another window when a choice is selected in a select list. This new window gathers some information and then is supposed to post it back to a specific field on the window that opened this window in the first place. But the javascript to post the data back to the opener doesn't work. The line that is having the problem is this:

opener.document.form.getElementById("MenuExtraChg["+Index+"]").value=99.9;

(I've hard-coded the number and for simplicity.)
I've also tried reading from the parent form in a similar manner and that doesn't work either:

myVal = opener.document.form.getElementById("MenuExtraChg["+Index+"]").value;

Help please!

joefawcett · August 30th, 2003, 10:54 AM

Can you show the actual lines of code as what you posted here looks ok in theory?

--

Joe

Imar · August 30th, 2003, 11:13 AM

Hi there,

The getElementById method just belongs to the document, and is not a method of the form object. Remove the form. to have your code look like this:

Code:

myVal = opener.document.getElementById("MenuExtraChg["+Index+"]").value;

Does that help??

Cheers,

Imar

---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.

wjenkins · August 30th, 2003, 03:40 PM

Thank you so VERY much! That worked beautifully!:D

Since you seem to be a helpful sort, I have one other little problem...

In my parent form, I have an array of textareas that I can't seem to access from javascript. Here's what I have (doesn't work):

document.getElementById(\"MenuItemComment[\"+MenuIndex+\]\").value=\"Nothing Entered\";\n";

I need to also access the same field from the child screen.
Thanks for your help so far!

Imar · August 30th, 2003, 03:49 PM

Helpful sort?? Hmmm, not sure whether that is good or not.... ;)

Anyway, below you'll find an example that builds an array of textareas on the page and then loops through it alerting each value of the area. Notice that it isn't very cross browser as it uses getElementById and getElementsByTagName.....

Cheers,

Imar

Code:

<html>
    <head>
        <title>Array of Text Areas</title>
        <script language="JavaScript">
            function OnLoad()
            {
                var allTextAreas;
                // get a reference to all <textarea> tags in the page
                if (document.all || document.getElementsByTagName) 
                {
                    allTextAreas = document.getElementsByTagName("textarea");
                }
                else 
                {
                    document.write("Unrecognized Browser Detected");
                }
                // If there are textareas
                if (allTextAreas.length > 0)
                {
                    for (i = 0; i < allTextAreas.length; i++)
                    {
                        alert(document.getElementById(allTextAreas[i].id).value);
                    }
                }
            }
        </script>
    </head>
<body onload="OnLoad();">
<textarea id="txt1">Text 1</textarea>
<textarea id="txt2">Text 2</textarea>
<textarea id="txt3">Text 3</textarea>
</body>
</html>

---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.