Promise.all

Definitions

1. A JavaScript method that takes an iterable of Promises and returns a single Promise that resolves with an array of all results when every input Promise fulfills, or rejects immediately when any single input Promise rejects — enabling parallel execution of independent async operations.

   In plain English: A way to kick off multiple tasks at the same time and wait until all of them are done before moving on.

   Example: "We use Promise.all to fetch the user profile, notifications, and feed in parallel instead of awaiting each one sequentially."

Related Terms

• Callback Hell
• Coroutine
• Event Loop
• Future
• Promise
• Task
• Promise Chain
• Top-Level Await
• Async Pool