How to close applications on various operating systems via JavaScript

With the development of mobile Internet, mobile applications have become an indispensable part of people's daily lives. However, sometimes we need to close mobile applications to save power or reduce data traffic when running in the background, and the methods of closing applications are different on different operating systems. This article will explain how to close applications on various operating systems via JavaScript.

1. iOS operating system

To close an application on the iOS operating system, you can use the so-called "forced deactivation" function. In a web application, you can use the following code to close the application where the current page is located:

window.close();

However, on the iOS operating system, this code does not work. In order to close an app, you need to perform the following steps:

1. First, swipe to the home screen of the app.
2. Press the Home button on your device twice to open the multitasking manager.
3. Find the application that needs to be closed in the multitasking manager and slide it up until the application disappears from the multitasking manager.

Through the above steps, the application on the iOS operating system can be closed.

2. Android operating system

To close an application on the Android operating system, you need to perform the following steps:

1. First, open the application list.
2. Find the application that needs to be closed and click the application icon.
3. While in an app, press the back key on your device until the app is closed.

You can use the following code to close the application where the current page is located:

navigator.app.exitApp();

However, in some Android operating system versions, this code may not work.

3. Windows Phone Operating System

To close an application through JavaScript on the Windows Phone operating system, you must use the following code:

window.external.notify("Exit");

In addition, you must also add The following code:

document.addEventListener("backbutton", function (e) {
    e.preventDefault();
    window.external.notify("BackButton");
    return false;
}, false);

The above code will fire when the device's back key is pressed, allowing the application to close if needed.

4. Summary

To close an application on different operating systems, you need to perform different steps and use different codes. In web applications, the function of closing the application can be implemented through JavaScript code. However, when implementing this feature, you need to consider the differences and compatibility of different operating systems to ensure that the application can run properly on various devices.

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