How to stop nodejs from running

Node.js is a popular backend JavaScript framework that can be used to build a variety of applications. In Node.js, when we start an application, it will keep running until we stop it manually. In some cases, we may need to stop a Node.js application, so this article will introduce some common methods to stop Node.js from running.

1. Using Ctrl C

On Windows and Unix systems, you can use Ctrl C to stop the execution of a Node.js application. Pressing Ctrl C in the command line interface will send a SIGINT signal to the Node.js process, which will cause Node.js to stop running and output a message telling the user that the process has exited. This is the simplest and most common method and can be used at any time.

2. Use process.exit()

process.exit() is a global function built into Node.js that can be used to stop the execution of Node.js applications . Calling process.exit() will cause the Node.js process to exit immediately without performing any subsequent actions. This method can also be used at any time, but should be used with caution as it may result in data loss, or corruption of incomplete process state.

3. Using Task Manager

On Windows operating systems, you can use Task Manager to stop the execution of the Node.js process. Open the Task Manager and select the Node.js process, then click the "End Process" button to stop the execution of Node.js. This is very convenient for users who are not familiar with the command line interface or memorizing shortcut keys.

4. Using Signals

Node.js applications can use Unix signals to stop their own execution. Sending a SIGINT or SIGTERM signal to the Node.js process will cause the Node.js process to stop running. This method is often used to handle some specific signals in Node.js applications.

For example:

process.on("SIGINT", function () {
  console.log("Received SIGINT signal, stopping process...");
  process.exit();
});

This example code prints a message and stops the execution of the Node.js process when the SIGINT signal is received.

5. Use the npm stop command

If your Node.js application is managed using npm, you can use the npm stop command to stop the execution of Node.js . Entering npm stop on the command line will trigger npm to send a SIGTERM signal to the Node.js process and stop the execution of Node.js. This command can only be run in the directory used by npm, running it in other directories will generate an error.

In short, these are common ways to stop Node.js from running, and you can use them at any time. However, please note that stopping Node.js applications may result in data loss or corruption, so make sure you use them at the right time and in the right place.

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