Web Reference: JavaScript Promises were created to make asynchronous JavaScript easier to use. A Promise object represents the completion or failure of an asynchronous operation. Jan 21, 2026 · The Promise object represents the eventual completion (or failure) of an asynchronous operation and its resulting value. To learn about the way promises work and how you can use them, we advise you to read Using promises first. Dec 11, 2024 · A promise is a special JavaScript object that links the “producing code” and the “consuming code” together. In terms of our analogy: this is the “subscription list”.
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