Let's talk about several methods of closing windows using JavaScript

JavaScript is a programming language widely used in web development, which can achieve various interactive effects and practical functions. One of the basic functions is to close the window, which can help users exit the current page or application conveniently. In this article, we will introduce several ways to close a window using JavaScript.

1. Using window.close()

The easiest way is to use the window.close() function. This function does not require any parameters, just execute it to close the current window. For example, the following code can close the current window when the button is clicked:

<button onclick="window.close()">关闭窗口</button>

It should be noted that this method can only close the window created by JavaScript, but not the main browser window or opened by the user. new window. In addition, if the current window is opened by another website, closing the window using window.close() may cause the browser to pop up a warning box asking the user whether to allow the window to be closed.

2. Use window.opener.close()

Another way to close the current window is to use the window.opener.close() function. This function can be executed on the parent window of the current window, thereby closing the current window. For example, the following code can close the parent window of the current window when the button is clicked:

<button onclick="window.opener.close()">关闭窗口</button>

It should be noted that when using window.opener.close() to close the window, the parent window must be opened by JavaScript . If the parent window was opened manually by the user, closing the window using this method will have no effect.

3. Use window.parent.close()

Similar to window.opener.close(), the window.parent.close() function can be used in the parent window of the current window. Executed on the window, thereby closing the current window. The difference is that window.parent.close() can close any parent window, whether created by JavaScript or opened by the user. For example, the following code can close all parent windows when the button is clicked:

<button onclick="window.parent.close()">关闭窗口</button>

It should be noted that when using window.parent.close() to close the window, a pop-up window warning box may appear asking Whether the user is allowed to close the window. In addition, this method can only close the window, not the entire browser.

4. Use window.open() to open a blank page

Another way to close the current window is to use the window.open() function to open a blank page and then close it current window. For example, the following code can open a blank page when a button is clicked, and then close the current window:

<button onclick="window.open(&#39;about:blank&#39;,&#39;_self&#39;).close()">关闭窗口</button>

It should be noted that when using window.open() to open a blank page, the first parameter must be is 'about:blank', and the second parameter must be '_self' so that a new page can be opened correctly in the current window. In addition, when closing the window, a pop-up warning box may appear, asking the user whether to allow the window to be closed.

Summary

Using JavaScript to close a window is a very practical function that can help users exit a page or application conveniently. This article explains several ways to close a window, including opening a blank page using window.close(), window.opener.close(), window.parent.close(), and window.open(). It should be noted that these methods have certain limitations and cannot meet the needs of closing windows in all situations. Therefore, in practical applications, the appropriate method should be selected according to the specific situation.

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