var newWin = window.open(url);
if(!newWin || newWin.closed || typeof newWin.closed=='undefined')
{
//POPUP BLOCKED
alert('blocked');
} else {
alert('enabled');
}
This code only works for first time when I newly loaded site in chrome. But once I allow popup and agin disabled it from chrome site setting still it opens window and gives alert as 'enabled'