Let’s talk about several ways to close documents in JavaScript

JavaScript is a widely used programming language that can dynamically change the content and behavior of web pages. In the process of web page production, it is often necessary to close the web page under certain conditions. At this time, you need to use the JavaScript close document command. This article will introduce several ways and usage scenarios of closing documents in JavaScript.

1. JavaScript closing document method

1. Use the window.close() command to close the current window.

This method can close the current window at any time, whether it is when the button click event is triggered or when any other event is triggered, you can use this command to quickly close the window. This command does not have any parameters and only needs to be called where the window needs to be closed.

2. Use window.open() to open a new window, and then use window.close() to close the window.

This method requires two steps to close the window. First, use the window.open() method to open a new window in the event that the window needs to be closed. Then, when you need to close the window, still use the window.close() method to close it. The advantage of this approach is that you can create multiple pages in the window and then close these pages when needed.

3. Use the setTimeout() method to delay closing the window.

This method can automatically close the window after a certain period of time. You can control the time when the window closes by setting the time parameter in the setTimeout() method. This method closes the window after a period of time after it is opened, so there is no need to call it in the event that needs to close the window.

2. Application scenarios of JavaScript closing documents

1. Close the current window or page.

In the process of web page creation, the current window or page needs to be closed under certain conditions. In this case, the window.close() method can be used to achieve this. For example, close the web page after the user completes the order, or close the web page when the user logs out, etc.

2. Close the pop-up window.

Sometimes a window needs to pop up to complete some operations, and the pop-up window needs to be closed after the operation is completed. At this time, you can use the window.close() method to close the window. For example, completing a purchase in a pop-up window that displays product details and then closing the window.

3. The timer closes the window.

Sometimes you need to use a timer to control the closing time of the window. In this case, you can use the setTimeout() method to delay closing the window. For example, you need to delay a few seconds after the video plays and then close the web page.

Summary:

JavaScript document closing command can be implemented through window.close() command, window.open() to open a new window and then close it, setTimeout() method to delay closing the window, etc. . In actual web development, you can choose different closing methods according to the required scenarios to better achieve web page interaction effects.

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