Learn how to write a promise based delay function and then use it in async await
to see how much it simplifies code over setTimeout
.
Lets say you want to call a function after 1s, 2s, 3s. You can use setTimeout
, or you can wrap it up into a simple delay function that works with async/await
const delay = (ms) => new Promise(res => setTimeout(res, ms)); const runAsync = async (cb) => { await delay(100); cb(‘1s‘) await delay(1000); cb(‘2s‘) await delay(1000); cb(‘3s‘) } runAsync((m) => { console.log(m)})