My goal is to create a new window pop-up using the window.open method that prevents the user from using the parent window until the child window is closed. I want to restrict the user's ability to switch back to the parent window while the child window is open.
Can anyone provide guidance on how to achieve this using JavaScript?
If you want to prevent the parent window from being used while the child window is open, consider using window.showModalDialog() instead of window.open().
To learn more about showmodalDialog, you can visit this page
Keep in mind that you won't be able to access window.opener from a modal dialog box (it will always be null) unless you explicitly pass a reference to the parent window in the second argument of showModalDialog() and retrieve it using window.dialogArguments.
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