Say you need to fire up 2 or more promises and wait for their result.
And you want to go on, once you have both resolved.
How can you do so, in JavaScript?
You use Promise.all():
const promise1 = //...
const promise2 = //...
const data = await Promise.all([promise1, promise2])
const dataFromPromise1 = data[0]
const dataFromPromise2 = data[1]
If you prefer using pure promises and not async/await, use this syntax:
const promise1 = //...
const promise2 = //...
Promise.all([promise1, promise2]).then(data => {
const dataFromPromise1 = data[0]
const dataFromPromise2 = data[1]
})
Download my free JavaScript Handbook!