What are Promises?

Understanding Asynchronous Communication in Code

Overview of Code Functions

• The code contains various functions that are invoked, which users will learn over time through documentation and practice.

• Emphasizes the asynchronous nature of communication with the browser, ensuring that each step is completed before proceeding to the next.

Promises in JavaScript

• Discusses the concept of promises, highlighting that there is no guarantee a value will be returned due to potential issues like a browser process failing.

• All methods used operate on promises; if a promise resolves successfully, the corresponding function executes with the returned value.

Handling Promise Failures

• If a promised value does not arrive, certain methods can be associated with handling failures using .catch(), allowing for error management within asynchronous operations.

Logical Operations with Promises

• Introduces an auxiliary function pAnd that mimics logical AND but operates on two promises. It executes based on whether both promises resolve successfully.