当我退出我的 Node 应用程序时，我可以运行 function 吗？

Question

I'm working on a project for school in Node.js on a Raspberry Pi. I have a script that is running and will run for long periods of time controlling some LEDs. Is there a way that I can run a function when I quit the program to turn off all the LEDs I'm using (Stop power to the GPIO)?

Answer 1

You can handle the SIGINT (CTRL-C) signal. Something like:

function cleanup() {
  // do clean up here
  console.log("clean up");
}

process.on("SIGINT", () => {
  cleanup();
  process.exit(0);
});