How to end the process in Nodejs

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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 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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