What is a Promise
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Lecture 222:- What is a Promise
A promise is an object representing the eventual completion or failure of an asynchronous operation. It allows you to write asynchronous code that behaves more like synchronous code, making it easier to understand and maintain.
A promise can have three states:
- Pending: The initial state, neither fulfilled nor rejected.
- Fulfilled: The operation completed successfully, and the promise has a resulting value.
- Rejected: The operation failed, and the promise has a reason for the failure.
Promises simplify the chaining of asynchronous operations. They allow you to avoid deeply nested callbacks, known as callback hell. Instead of relying on callbacks to handle the results of asynchronous operations, promises provide a more straightforward way to handle the eventual outcome of those operations.
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- 2. Creating First HTML Page
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- 4. What We Plan to Build
- 5. Title Tag
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- 12. Learning Anchor Tag Part 1
- 13. Learning Anchor Tag Part 2
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