jQuery如何防止重新打开新窗口？

Question

我有下面的代码来打开一个新的窗口，每当用户按F2键。

$(document).bind('keyup', function(e){ 
    if(e.which==113) { 
     window.open('newPage.htm','_blank','','false'); 
    } 
}); 

现在，我想阻止用户打开一个新的窗口，而前一个仍然打开。我怎样才能点出它？

Answer 1

var opened = null; 
$(document).bind('keyup', function(e){ 
    if (e.which == 113 && (!opened || !opened.window)) 
     opened = window.open('newPage.htm','_blank','','false'); 
​});​ 

Answer 2

你可以试试这个..

var windowOpened=false; 

    $(document).bind('keyup', function(e){ 
     if(e.which==113 && !windowOpened) { 
      window.open('newPage.htm','_blank','','false'); 
      windowOpened=true; 
     } 
    }); 




    In the newPage.htm add code to make windowOpened=false when u close that window. 


< html> 
< head> 
< title>newPage.htm< /title> 
<script> 
function setFalse() 
{ 
    opener.windowOpened = false; 
    self.close(); 
    return false; 
} 
</script> 
< /head> 
< body onbeforeunload="setFalse()"> 
< /body> 
< /html> 

Answer 3

给你的窗前，仿佛

var mywindow = window.open("foo.html","windowName"); 

一个名字，那么你可以检查窗口做

if (mywindow.closed) { ... } 

Answer 4

关闭当窗口关闭时，window.docum会发生什么情况恩？它是否为空，也许你可以通过null检查它。

var popupWindow; 

$(document).bind('keyup', function(e){ 
    if(e.which==113 && (!popupWindow || !popupWindow.document)) { 
     popupWindow = window.open('newPage.htm','_blank','','false'); 
    } 
});