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JavaScript problem with popup refering to parent window

Subject: JavaScript problem with popup refering to parent window
From: Richard Hale <email@hidden>
Date: Tue, 21 Jun 2005 18:00:09 -0700
Delivered-to: email@hidden
Delivered-to: email@hidden
User-agent: Mozilla Thunderbird 1.0.2 (X11/20050317)

Hi,

i'm hoping to get some help with a javascript problem i am encountering with safari 1.3. the same javascript works fine in firefox and IE, but i must also support safari users. i'll describe a test case to demonstrates the problem. the pertinent code is included below.

test case: === basically, a web page contains a link that, when clicked, causes a popup window to appear. in the popup there is a link that, when clicked, should cause an input field from a form back in the main page (parent window) to be filled in with some text.

in the code below, the alert() messages i get in the popup function changeListing() are: * '[object Window]' for parent * 'undefined' for parent.creator * 'undefined' for parent.paramname

with parent.creator undefined i can't get to the main pages changeText() function, which would write the text to the form's input field. ===

if someone could point me in the right direction to solve this problem i would be very grateful.

--
Richard Hale


=============================================================

POPUP WINDOW:

<html><head><title>popup</title>
<script language="JavaScript">
<!--
function changeListing(pvalue) {
    alert("changeListing(): parent: "+parent+"\n");
    alert("changeListing(): parent.creator: "+parent.creator+"\n");
    alert("changeListing(): parent.paramname: "+parent.paramname+"\n");
    parent.creator.changeText(parent.paramname, pvalue);
    parent.close();
}
// -->
</script>
</head><body>
<a HREF="javascript:changeListing('TEST VALUE');">TEST VALUE</a>
</body>
</html>

=============================================================

MAIN PAGE:

<html><head><title>jstest page</title>
<script language="JavaScript">
<!--
// *********************************************************************
function openNewWin(pname) {
  win = open('jstestpopup.html', '', 'scrollbars=no,width=250,height=25');
  win.creator = self;
  win.paramname = pname;
  win.focus();
}
// *********************************************************************
function changeText(pname, pvalue) {
  index = getIndex(pname);
  document.modform.elements[index].value = pvalue;
}
// *********************************************************************
function getIndex(pname) {
  n_elements = document.modform.elements.length;
  for (var i=0; i<n_elements; i++) {
    if (document.modform.elements[i].name==pname) { return i; }
  }
  return -1;
}
// *********************************************************************
// -->
</script>
</head><body>
<form name="modform" method="post" action=".">
  <div align="center">
    <a HREF="javascript:openNewWin('jstest')">open popup</a>
    <br><br>
    value: <input type="text" name="jstest" size="10">
  </div>
</form>

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