Javascript 在使用 Jquery 打开之前检查弹出窗口是否已经打开
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/10882112/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Check if a popup window is already open before opening it using Jquery
提问by Scorpyon
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?
我想在打开弹出窗口之前检查弹出窗口是否已经打开。我如何使用 Jquery 完成它？
Below is my code to open a new popup window :
下面是我打开一个新弹出窗口的代码：
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.
现在在我调用它之前，我想确保这个弹出窗口还没有打开。
回答by Omri Aharon
This is a little trick I use, perhaps you could use it:
这是我使用的一个小技巧，也许你可以使用它：
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.
希望能帮助到你。
回答by Fabrizio Calderan
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(...);
}
}
回答by Fabiano Couto
Here is my suggestion:
这是我的建议：
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');
});
}
回答by Shehzad Bilal
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(...);
}
回答by kleinohad
try this (you will know if the open window was called):
试试这个（你会知道是否调用了打开的窗口）：
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");
}
}
