Question

I am thinking about opening the help page of my application in a popup¹. My problem is that I don’t want to open multiple popups if the user clicks the help button more then once.

Is it possible, in a cross-browser way, to reuse an old popup window instead of opening a new one?. I’m hoping I can bring it back to the foreground² or something like that.

In the worst case I think I can go back to a div-based Javascript dialog but I’d rather avoid that if possible.

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¹ Most normal desktop apps use popups for the help dialogs so I don’t think there is anything wrong with this choice.

Also, I think in my case a normal link to a help page would be suboptimal from a practical perspective (I don’t want people navigating around too much in my single-page app) and from a technical one (the help contents are created via Javascript and using popups + document.write is more flexible for me)

² Some comparisons with Windows desktop apps: Windows Explorer and IE refocus the old help window if you try to open it again. Office apps have the help window always on top. Firefow and Chrome just open a new browser tab (and open multiple ones if you try again)

Answer 1

I usually just use focus()

 function help_open(id) {
 newwindow = window.open('help.php?id=' + id, 'popup_return',     'menubar=no,history=no,resizable=yes,scrollbars=yes,toolbar=no,width=800,height=600');
if (window.focus) {newwindow.focus()}
   }