What close () does in javascript?
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What works, what doesn’t, in a nutshellPhoto by Nathan Fertig on Unsplash
It’s interesting how often this question comes up. It can be answered very quickly. As the MDN says,
First: Opening and Closing Windows.Windows are opened with window.open(); — full syntax here Windows are closed with window.close(); — full syntax here This is where the MDN statement comes into play. A simple example should clear this up. Example:I’ve created two pages, Page1.html (the parent window) and Page2.html (the child window.)
The JavaScript functions are to,
Running the exampleRun Page1.html and click “Open child”. A child window opens as separate window as a tab. Child opens as a tabGo back to the parent and click “Close child” and the child window closes. Viola! Now, on the
parent, click “Close me”. Nothing happened. Bummer!
According to the MDN it can close itself, under the right conditions. Add the following button and closeMe() function to Page2.html (child.) Additions to childRunning the exampleRun Page1.html and click “Open child”. A child window opens as separate window as a tab, just as before. Now click the “Close me” in the child. It closes. Viola! That window closed itself. Observations below. Conclusion:
So the statement,
Makes more sense now. I hope this simple example has cleared a few thing up. Thanks for reading! Hold on. One last comment.
Try it
SolutionYou will notice I had a variable called “childname”. If we store that on the page, we can use it to get a reference again! Below, in Page1.html, I added a text field (could be a hidden field), removed the closeMe() function since that was an epic fail! and modified the closeChild() function to look and see if the reference was lost. If so, use the window’s name stored on the form. Observe closeChild()Running the Example
Happy coding! JavaScript provides a variety of methods to perform any operation on a web page effectively. The window.open() method is used to open a tab in the browser. Moreover, the window.close() method can be employed to close the window utilizing JavaScript. That window is already opened by the user in the URL. Table of Contents
This post demonstrates the working and usage of the window.close() method to close the window with JavaScript that is already opened by a URL. How to Use the window.close() Method in JavaScript?In JavaScript, the window.close() method is utilized for closing the window that has already been opened by the window.open() method. The working of the window.close() method is described using the following syntax: Syntax The window.close() method does not take any parameter, it just closes the existing open tab in the browser. Note: Some of the browsers do not support the window.close() method if the window.open() method is not employed first to open any webpage. For a better understanding, the following lines of code are implemented to close windows with the built-in methods of JavaScript. Code <html> <head> <center><h2 style="color:red"> An example of Window close() method h2> <body> <b> Press the button to open Linuxhint site b><br> <button onclick="windowOpen()"> Open Linuxhint button> <br><br> <b> Press the button to close Linuxhint site b><br> <button onclick="windowClose()"> Close Linuxhint button> body> center> <script> var newWindow; function windowOpen() { newWindow = window.open( "https://linuxhint.com/declare-variables-different-ways-javascript/", "_blank", "width=400, height=250"); } function windowClose() { newWindow.close(); } script> head> html> In the above code:
Output The output shows the execution of the window.close() method in JavaScript. The link is opened using the “Open Linuxhint” button. When the “Close Linuxhint” button is pressed, the window is closed. ConclusionThe window.close() method can be used to close a window by utilizing JavaScript that is already opened by a URL. Most of the time, the window.close() method works with the window.open() method. For a better understanding, we have provided a detailed working and usage of the window.close() method alongside. In the provided example, the window is opened first, and then it is closed using the window.close() method in JavaScript. I hold a master's degree in computer science and work as an academic researcher. I am eager to read about new technologies and share them with the rest of the world. How do you close a website using JavaScript?Simply call window. close() and it will close the current window. How do I close a current window?Click Close Current Window on the File menu to close the active debugging information window. This command is equivalent to pressing CTRL+F4. You can also close a debugging information window by clicking the Close button in the upper-right corner of the information window inside the WinDbg window. How do I close the current tab in JavaScript?You will need Javascript to do this. Use window. close() : close(); How do you close a command in HTML?Basic steps: using tags The closing tag normally contains a "/" before the directive to indicate the termination of the action. HTML tags are not case-sensitive, although URLs generally are. In most cases (with the exception of preformatted text) HTML collapses many spaces to one space and does not read blank lines. What is close button for?(eXit button) Also called a "close" or "exit" button, clicking or tapping the X removes the current window, dialog box or popup message from the screen. It is also used to delete text and graphics.
How do you close a form in JavaScript?close() method simply close the window or tab opened by the window. open() method. Remember that - You have to define a global JavaScript variable to hold the value returned by window. open() method, which will be used later by the close() method to close that opened window.
How do I close the current page in JavaScript?window. top. close(); this will close the current tab for you.
How do I close a current window?Click Close Current Window on the File menu to close the active debugging information window. This command is equivalent to pressing CTRL+F4. You can also close a debugging information window by clicking the Close button in the upper-right corner of the information window inside the WinDbg window.
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