How do I prevent Google Chrome from blocking my popup?

Question

On my website there is a button that just used to call a function that calls window.open, however, recently an adjustment was needed to do a server-side check b

Answer 1

You can open a window that is not blocked just under the onclick event, if you open it on ajax call it is considered popup. However I used this method with success for some time to open a popup and not be blocked.

http://en.nisi.ro/blog/development/javascript/open-new-window-window-open-seen-chrome-popup/

Answer 2

Yes, popups should be a direct result of a user action. Doing them in ajax callback will not do the trick. Also, using async:false is bad - in FF it is known to block the whole browser. Think of some other way to do the check:

• it could be the first thing you do in the popup
• you can open the popup on click and manipulate it later when the callback fires
• you can require the user to click again some button to trigger the popup (probably the worst solution)
• you can do it on page load

Answer 3

I use this method:

1. Redirect to the same page with download url added as parameter:

window.location.href = window.location.protocol + '//' +
                    window.location.host + window.location.pathname +
                    "?download=" + encodeURIComponent(urlToDownload)

2. Detect this parameter on page initialization and redirect to download:

function param(name){
    var results = new RegExp('[\\?&]' + name + '=([^&#]*)').exec(window.location.href);
    if (!results) { return 0; }
    return results[1] || 0;
}

var downloadParam = param('download');
if (downloadParam) {
    window.location = decodeURIComponent(downloadParam);
}

Answer 4

The previous solution did not work for me, but I based on it and used named window.

internalCounter++;
var tabbedWin = window.open('','windowName_'+internalCounter);
$.ajax({
        url: url,
        async: false,
        indexValue:internalCounter,
        success: function(){
            var w= window.open(url, 'windowName_'+this.indexValue);                
            w.focus();
        }
})

Answer 5

In my case the window.open was launched inside a promise in angular, which turned the popup blocker on, my solution was:

$scope.gotClick = function(){

  var myNewTab = browserService.openNewTab();
  someService.getUrl().then(
    function(res){
      browserService. updateTabLocation(res.url, myNewTab);
    }
  );
};

browserService:

this.openNewTab = function(){
  var newTabWindow = $window.open();
  return newTabWindow;
}

this.updateTabLocation = function(tabLocation, tab) {
  if(!tabLocation){
    tab.close();
  }
  tab.location.href = tabLocation;
}

this is how you can open a new tab using the promise response and not invoking the popup blocker.

Answer 6

Following up on Emil's excellent answer, "you can open the popup on click and manipulate it later when the callback fires". I used this implementation.

$('#attackButton').click(function() {

New code here

    var win = window.open('');
    window.oldOpen = window.open;
    window.open = function(url) { // reassignment function
        win.location = url;
        window.open = oldOpen;
        win.focus();
    }

end new code

    $.ajax({
        url: baseurl + '/index.php',
        data: { 'gameid': 618 },
        type: 'POST',
        success: function(data) {
            window.open('some url'); // will call reassignment function above 
        }
    });

    return false;
});