Check if a popup window is already open before opening it using Jquery

Question

I want to check if a popup window is already open , before I open the popup window. How do I get it done using Jquery?

Below is my code to open a new popup window :

Answer 1

try this (you will know if the open window was called):

var isOpen = "false";
function OpenPopup()
{
   if(isOpen == "false")
   {
         isOpen = "true"; 
         window.open("mystopchat.php?stat=1&session="+data['myid1']['session_id']  [i],"win1","width=500,height=500");
    }
}