We can create a function that returns a promise that calls setTimeout so that we can use setTimeout in a promise chain.
For instance, we can write:
const delay = (t, v) => {
return new Promise((resolve) => {
setTimeout(() => resolve(v), t)
});
}
(async () => {
const one = await Promise.resolve(1)
console.log(one)
const two = await delay(1000, 2)
console.log(two)
const three = await Promise.resolve(3)
console.log(three)
})()
to create the delay function that returns a promise by creating one with the Promise constructor.
We pass in a callback that calls setTimeout , which calls resolve with v and delays the execution of the callback by t milliseconds.
Then we use delay in an async function with other promises.
Now we should see a delay when we’re calling delay .
And 1, 2, and 3 are logged in the console log.
