Saturday, June 27, 2009

Maintaining Javascript Pop-Up Window Communication Across Window Opener Page Loads

I came across a blog post that talks how to maintain a reference to javascript popup window while the parent window has been navigated away. This scenario doesn't want to reload the child popup window. I just quoted out from 1 Pixel Out. There is a really nick trick.

In the main window:

var popupWin = null;

function openPopup() {
   var url = "popup.htm";
   popupWin = open( "", "popupWin", "width=500,height=400" );
   if( !popupWin || popupWin.closed || !popupWin.doSomething ) {
      popupWin = url, "popupWin", "width=500,height=400" );
   } else {

function doSomething() {

In the popup:


function doSomething() {
   alert("I'm doing something");


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