code sample to show how to log javascript execution time

js-execution-time.js

// created a delay function to simulate a slow process
const delay = ms => new Promise(res => setTimeout(res, ms));

// create a time to log full execution time
console.time('full');

// create a time to log the 3s process
console.time('log 3s');
await delay(3000);
console.log('3s');
console.timeEnd('log 3s');

console.time('log 5s');
await delay(5000);
console.log('5s');
console.timeEnd('log 5s');

console.time('log 10s');
await delay(10000);
console.log('10s');
console.timeEnd('log 10s');

// print the full execution time
console.timeEnd('full');