JavaScript

Let's take a look at the Promise API.
4 methods explained with examples below.

Promise.all()

The Promise.all() method takes an array of promises as an argument and returns a single Promise that resolves to an array of the results of the input promises.

Promise.allSettled()

The Promise.allSettled() method returns a promise that resolves after all of the given promises have either fulfilled or rejected, with an array of objects that each describes the outcome of each promise.

Promise.any()

The Promise.any() method takes an array of promises as an argument and, as soon as one of the promises fulfills, returns a single promise that resolves with the value from that promise.

Promise.race()

The Promise.race() method returns a promise that fulfills or rejects as soon as one of the promises in an array fulfills or rejects, with the value or reason from that promise.