This code works in Chrome. How can I make it work in FF as well.

Question

function openWin(ID) { // open workshop ID in another window
var URL = '/chatroom.php?ID='+ID;
var name = 'Chat'+ID; // so if you open it twice it reopens the window.
var win = window.open('',name); // no URL - won't refresh
if (win.location == "about:blank") { // new open
win.location.href = URL;
win.focus();
This code is called on a "javascript link". The first call is to open the new window and switch to it. Any subsequent call is to reopen the window WITHOUT REFRESHING and switch to it.
As mentioned. The code works perfectly in Chrome. In Firefax 23.01 the focus call is ignored, leaving the background window or tab in the background.
For what its worth, it does the same in IE 10 either, but IE is a lost cause.

Answer 1

I tested using a bookmarklet: *
javascript:var winTest = window.open("", "winTest1", "width=800,height=600"); winTest.focus(); if(winTest.location.href == "about:blank") winTest.location.href = "http://support.mozilla.org/"; void 0;
Note that I've switched the order of the statements so that winTest.focus() precedes accessing the location object.
When I am viewing a page on this site, the window opens as expected. If I switch focus back to my original window and run the bookmarklet again:
* with dom.disable_window_flip set to its default value of true, <s>the focus ''does not'' change</s> ''correction: this does seem to work''
* with dom.disable_window_flip set to false, the focus ''does'' change
If I try the same bookmarklet from another site, I get a permission error (cross-domain violation) in the Browser Console (Ctrl+Shift+j) attempting to check the current href on the second run. This halted the script before it could change focus. That's why I switched the sequence of statements.
Can you replicate that?
''*'' To create a bookmarklet, display the Bookmarks Toolbar, then copy the above string of code. Right-click the Bookmarks Toolbar, choose New Bookmark, paste the code into the Location box and choose any name you like.