async
The async keyword in JavaScript is used to define asynchronous functions. It indicates that a function will perform asynchronous operations, typically involving promises, and can use the await keyword to pause its execution until a promise is resolved. This makes it easier to write and manage asynchronous code by making it appear more like synchronous code, enhancing readability and maintainability. Async functions return promises implicitly, allowing you to work with them using promise-based patterns.