In programming, a is an object representing the eventual completion (or failure) of an asynchronous operation and its resulting value. Three States of a Promise :

: The operation failed, usually with an error message. Key Methods for Handling Results :

.finally() : Executes code regardless of whether the promise was fulfilled or rejected.

.catch() : Used for error handling if the promise is rejected.

: They help developers avoid " callback hell "—a messy situation where multiple functions are nested inside each other, making code hard to read and debug. 2. The Theological Guide: Biblical Promises

: The initial state; the operation has not finished yet.