A brief discussion on how to shut down the process in Nodejs

This article will let you know how to Node close the process. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.

Related recommendations: "nodejs Tutorial"

NodeJS end process

• Process: object is a global variable that provides information about the current Node.js process and controls it. As a global variable, it is always available to Node.js applications without requiring(). It can also be accessed explicitly using require()

process.kill(pid[, signal]) event

New Added in: v0.0.06 (node)

• pid process PID
• signal|The signal to be sent, type is string or number, default value: SIGTERM.
• The process.kill() method signal is sent to the process identified by pid
• The signal name is a string such as ‘SIGINT’ or ‘SIGHUP’. See signal events and kill(2) for more information.

If the target pid does not exist, this method will throw an error. As a special example, signal 0 can be used to test whether a process exists. On Windows platforms, an error is thrown if pid is used to kill a process group.

Even though the name of this function is process.kill(), it actually just sends a signal, which is similar to the kill system call. The signal sent may be to do something unrelated to killing the target process

Simple and crude code demonstration

• Let’s take a look first Official website documentGentle codeDemonstration

process.on('SIGHUP', () => {
  console.log('收到 SIGHUP 信号');
});

setTimeout(() => {
  console.log('退出中');
  process.exit(0);
}, 100);

process.kill(process.pid, 'SIGHUP');

• Simple and crude way to demonstrate directly

  • Due to personal working time, I won’t write the code in detail, but the overall idea is the same

  • Requirement: Get your own corresponding process pid according to your own computer. pid fills it into the variable, and after completing the encoding, use node to compile the code---->Execute

  • node process.js

  • let pid = 11784;//11784是我个人电脑上的应用程的pid，可根据自己电脑的pid填入其中
    process.kill(pid, 'SIGTERM');//结束pid的进程

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