where to run javascript code code example

Example 1: javascript run command

const { execSync } = require('child_process');

const output = execSync('ls', { encoding: 'utf-8' });

console.log('The output is:');
console.log(output);

Example 2: how to run js script

$ node // now we can execute code in console
> 2 + 4 //our input
6 //output 
> .exit // or ctrl + c