Window.open only if the window is not open

Question

I have a link on my site that opens a new window to a page that plays a very long audio file. My current script works fine to open the page and not refresh if the link is cl

Answer 1

You should first to call winRef = window.open("", "winPopup") without URL - this will return a window, if it exists, without reloading. And only if winRef is null or empty window, then create new window.

Here is my test code:

var winRef;

function OpenWindow()
{
  if(typeof(winRef) == 'undefined' || winRef.closed)
  {
    //create new
    var url = 'http://someurl';
    winRef = window.open('', 'winPop', 'sampleListOfOptions');
    if(winRef == null || winRef.document.location.href != url)
    {
      winRef = window.open(url, 'winPop');
    }
  }
  else
  {
    //give it focus (in case it got burried)
    winRef.focus();
  } 
}

It works.