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 :

window.open("mystopchat.php?stat=1&session="+data['myid1']['session_id'][i],"win1","width=500,height=500"); 

Now before I call this, I want to be sure that this popup window is not already open.

Answer 1

var popup;
function openPopupOneAtATime() {
    if (popup && !popup.closed) {
       popup.focus();
       /* or do something else, e.g. close the popup or alert a warning */
    }
    else {
       popup = window.open(...);      
    }
}

Answer 2

This is a little trick I use, perhaps you could use it:

var winRef; //This holds the reference to your page, to see later it is open or not

function openWindow() {  
    var url = //Your URL;
    if (typeof (winRef) == 'undefined' || winRef.closed) {
        //create new, since none is open
        winRef = window.open(url, "_blank");
    }
    else {
        try {
            winRef.document; //if this throws an exception then we have no access to the child window - probably domain change so we open a new window
        }
        catch (e) {
            winRef = window.open(url, "_blank");
        }

        //IE doesn't allow focus, so I close it and open a new one
        if (navigator.appName == 'Microsoft Internet Explorer') {
            winRef.close();
            winRef = window.open(url, "_blank");
        }
        else {
            //give it focus for a better user experience
            winRef.focus();
        }
    }
}

Hope it helps.