I have request from the customer to adjust some old functionality in the system. The current file has href links that look like this:
#Name#
If you look the code above you see that target="_blank" page will be opened in the new browser window. However, user wants to be able to close that window if they click OK/Cancel button in page.detail.cfm. I tried using this code for closing the browser window:
var closeBtn = document.getElementById('btn_cancel');
closeBtn.addEventListener('click', cancel);
function cancel(){
window.close();
}
After I tested the code and clicked Cancel message in the dev tools looks like this:
Scripts may not close windows that were not opened by script.
I guess that window can't be closed if not previously opened with JavaScript. I'm not sure what would be the best approach to solve this issue? Thanks for your help.
Technically a script is not allowed to close a page that a user has opened as opposed to it being opened by a script itself. It's a browser security issue. I know there were some hacks for it but thing like this get patched pretty quick from what I can tell. You could technically open the window with a script instead with some sort of click event or such, but again this is a bit of a work around. Check this out https://developer.mozilla.org/en-US/docs/Web/API/Window/close
Related
In my wordpress site, some hacker has embedded a script into it somewhere.
The problem I'm having now is, whenever the site is opened, the first time a user clicks anywhere on it, a spam popup appears, due to the hacker's script.
Is there any way I can prevent the popup window from being created with Javascript?
If I can't prevent it, is there any way that I can close the popup using JS? Unfortunately, since the other script is creating it, I don't have a reference to the opened window. I've seen other scripts calling .close() on an opened window, but I don't have a reference to the new window, so I don't know how to close it.
Here's my site.
The popup on your site is opened by something calling window.open. You can prevent it by assigning something else to window.open and running your script before the other script does:
window.open = () => undefined;
(This does work, if I run this code on your site before your site's Javascript runs, no windows get opened)
It's not uncommon for a client to want to implement this, but if you're the server, it'd be better to fix the server to remove the malicious code, rather than try to patch around it.
I am working on a web application where I am using JavaScript for the client side scripting. Now my requirement is to close all the opened window which were opened through window.showModalDialog().
For this, I read the history of the browser using window.history.length, but I do not know how to close each window. This works well for window.open(), but not for window.showModalDialog().
Could you please guide me to move forward?
You can close the opened window as follows:
To Open:
var window1=window.open("http://somedomain.com");
var window2=window.open("http://someotherdomain.com");
To Close
window1.close();
window2.close();
But be sure you call window1.close() and so on.. on the same script where you opened it.
You should not be using window.showModalDialog. Firefox has deprecated it, and Chrome has removed it. Also take a look at window.showModalDialog: What It is and Why You Should Never Use It.
The idea of showModalDialog is that all scripts are paused while the modal window is open. Thus, using window.close doesn't work, since as long as the window is open, no more scripts are being executed.
One possibility is to have JavaScript in the modal dialog so that is closes itself. You will not be able to close it from outside.
I have MyPage.aspx html page (generated using ASP.Net). When user tries to navigate away from this page, I need to close the window – user should not be able to go back or navigate to another page.
When I used window.close() inside window.onbeforeunload event, it asks for a confirmation to the user. “The webpage you are viewing is trying to close the window. Do you want to close the window?” On clicking “No” the user can escape the close attempt. Is there any way to forcefully close the window without giving an option to the user?
Reference:
How can I close a browser window without receiving the "Do you want to close this window" prompt?
Html javascript to open new window and close current window
"Unknown Exception" when cancelling page unload with "location.href"
Display confirmation popup with JavaScript upon clicking on a link
You can "trick" the browser like this:
window.onbeforeunload = function() {
window.open('', '_self', '');
window.close();
}
It seems to work in chrome/safari/ie/ff: http://jsbin.com/olijig/1
Firefox seems stubborn, but there might be another way to do the same in FF.
I should probably say that this technique is in no way standard and I don’t recommend it at all, and this code might break in many browsers besides firefox.
UPDATE
It actually works in Firefox too (latest version), but not older versions (I tried 3.6.1). You need to do some more testing to confirm the browser compatibility.
No, you can't. The user must be always capable of controlling whatever happens in his browser.
I'm not positive about this, but I believe if you have a window open another window, the parent window can close that child window. Would it be practical to have a landing page that opens your app in a separate window that could then close the window through javascript? Someone can probably elaborate more, as I haven't done this myself.
In my page when I click on a link a popup will be opened. In that popup, I have the close button. To close the window I am using simple JavaScript function as window.close().
This is working fine.
Now when I copy the URL of the popup link and open it in new window, I am not able to close the window.
In Firefox when using Firebug the warning given is:
'Scripts may not close windows that were not opened by script.'
Please help me out on any other alternative.
Firefox seems to answer that question: 'Scripts may not close windows that were not opened by script.'
This is a security measure. Imagine every site could close every other page you have open, that wouldn't work very well would it?
That's why only a parent window may close its children windows.
There may be a setting Firefox that allows windows not opened by script to be closed by script, but even if there is, what chance is there that your visitors will all have enabled this setting?
You can't work around this problem, it is how Firefox (and certainly other browsers) works. The only answer is to change your approach.
Why are you using windows as popups anyway? This has not been recommended for some time now and is mostly frowned upon. Popups that are actual windows may be blocked by popup-blockers.
You should probably use a modal popup instead of a window
I have an application, in that I want to close the entire browser on clicking on the close button from our application. I tried with the window.close() and self.close() functions but they will be closing the browser if the window is opened from window.open().
Please suggest to me how I can close the browser on clicking on the close button?
You can't. window.close() used to do that in a far past, but browsers don't allow that anymore, going from the concept of that a website should be able to stay open as long as it has to. Eg. a website doesn't end. If you log out, you don't close the window, you simply go back to the home page where you let the user log in again. Same with smartphone apps btw :-)
Most modern browsers will only let you close child windows of a parent. You cannot close the parent window through script.