Browser Support ECMAScript 2017 introduced the JavaScript keywords async and await. The following table defines the first browser version with full support for both:

Jul 8, 2025 · The async function declaration creates a binding of a new async function to a given name. The await keyword is permitted within the function body, enabling asynchronous, …

Jul 31, 2025 · The async keyword transforms a regular JavaScript function into an asynchronous function, causing it to return a Promise. The await keyword is used inside an async function to …

Mar 24, 2025 · asynchronous code returns a value, but it wraps the value in a Promise, so that the caller can use it to specify the 'then' function to be called when the asynchronous operation …

Sep 4, 2025 · In this guide, I’ll walk you through everything you need to know about async/await, from the fundamentals to real-world applications with the hopes that you can start using it in …

6 days ago · Learn how modern JavaScript handles asynchronous code using callbacks, promises, and async/await. See clear examples, common pitfalls, and when to use each.

Master JavaScript asynchronous programming with Promises, async/await, error handling, and practical patterns.