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Here is how to use a Promise: Promise.then () takes two arguments, a callback for success and another for failure. Both are optional, so you can add a callback for success or failure only. To demonstrate the use of promises, we will use the callback examples from the previous chapter:

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Jan 18, 2025 · JavaScript Promises make handling asynchronous operations like API calls, file loading, or time delays easier. Think of a Promise as a placeholder for a value that will be available in the future. It can be in one of three states. Pending: The task is in the initial state. Fulfilled: The task was completed successfully, and the result is available.

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