Summary
This chapter explains how to create and manage a Promise in JavaScript by using the Promise constructor with resolve and reject, simulating an asynchronous delay before moving the promise from pending to fulfilled and handling the result with .then().

General domain of usage
Asynchronous operations in JavaScript

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When you create a new `Promise` in JavaScript, it starts in the **pending** state. In the example above, the `myPromise` object is created using the `Promise` constructor, which takes a function with two arguments: `resolve` and `reject`. Inside this function, you can perform asynchronous operations. Here, a `setTimeout` is used to simulate a delay. After one second, the `resolve` function is called with the value `"Promise fulfilled!"`. This action moves the promise from the **pending** state to the **fulfilled** state. Once the promise is fulfilled, any `.then()` handlers attached to the promise will execute, receiving the resolved value. This pattern allows you to write asynchronous code that is easier to read and manage than deeply nested callbacks.

What does the resolve function do in a Promise?

Master the core concepts of asynchronous programming in JavaScript, from the event loop to modern async/await syntax. Learn how JavaScript handles non-blocking operations, why asynchronous code is essential, and how to write robust, readable, and maintainable asynchronous code using Promises and async/await.

Explore why asynchronous programming is necessary in JavaScript, how it differs from synchronous code, and the mechanics of the event loop and callback queue.

Learn how Promises provide a cleaner, more manageable way to handle asynchronous operations, including creation, chaining, and combinator methods.

Discover how async/await syntax simplifies asynchronous code, making it more readable and maintainable.

Learn how to handle and debug asynchronous errors, avoid common pitfalls, and write predictable, non-blocking JavaScript code.

Creating a Basic Promise

Creating a Basic Promise