Hello World

This tutorial shows you how to run your first JavaScript program with QuickJS-ng.

Create a JavaScript file

Create a file named hello.js with the following content:

console.log("Hello World");

This is the simplest possible QuickJS program that prints output to the console.

Run with qjs

Execute the script using the qjs interpreter:

qjs hello.js

Expected output:

Hello World

Run in REPL mode

You can also run QuickJS in interactive mode without a file:

qjs

Then type JavaScript directly:

QuickJS - Type "\\h" for help
qjs > console.log("Hello World");
Hello World
undefined
qjs > .exit

Next Steps

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