Sometimes, we want to detect CTRL+C key press in Node.js.

In this article, we’ll look at how to detect CTRL+C key press in Node.js.

How to detect CTRL+C key press in Node.js?

To detect CTRL+C key press in Node.js, we can call process.on with 'SIGINT'.

For instance, we write

process.on('SIGINT', () => {
  console.log("Caught interrupt signal");

  if (shouldExit) {
    process.exit();
  }
});

to call process.on with 'SIGINT' to listen for ctrl+c key press.

The interrupt signal is triggered by ctrl+c.

In the callback, we call process.exit to exit the app if shouldExit is true.

Conclusion

To detect CTRL+C key press in Node.js, we can call process.on with 'SIGINT'.