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

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广开言路
广开言路 2021-02-08 11:44

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 :

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5条回答
  • 2021-02-08 12:07
    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(...);      
        }
    }
    
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  • 2021-02-08 12:14

    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.

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  • 2021-02-08 12:18

    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");
        }
    } 
    
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  • 2021-02-08 12:21
    var newWindow = null;
    
    function openwindow()
    {
      // open the new window only if newWindow is null (not opened yet)
      // or if it was closed
      if ((newWindow == null) || (newWindow.closed))
        newWindow = window.open(...);
    }
    
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  • 2021-02-08 12:25

    Here is my suggestion:

    function authorize(callback) {
    
    if(!document.authorize) {
        console.log('Opening authorization window...');
        document.authorize = window.open('popup.html','tw','width=300,height=200');
    }
    
    if(document.authorize.closed) {
        console.log('Authorization window was closed...');
        setTimeout(callback,0); 
    } else {
        setTimeout(function(){
            console.log('Authorization window still open...');
            authorize(callback);
        },1000);    
    }
    
    return false;
    }
    
    
    function test() {
        authorize(function(){
          alert('teste');
        });
    }
    
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