then() is a rejection handler, though it is often considered better practice to use a dedicated. Understanding these states is essential to grasping how promises manage asynchronous logic.
Understanding Promise Chain Flow in JavaScript
Pending: The initial state, indicating the operation is not yet complete. Robust error handling is non-negotiable when working with asynchronous code.
then() method to handle the fulfilled state and optionally the rejected state. catch() method for error handling to keep the code clean and readable.
Understanding Promise Chain Flow and States in JavaScript
then() call returns a new promise, enabling you to build a pipeline of asynchronous tasks where the output of one step becomes the input for the next. The Promise States A JavaScript promise exists in one of three states at any given time, and this state is immutable once changed.
More About What are promises in javascript
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More perspective on What are promises in javascript can make the topic easier to follow by connecting earlier points with a few simple takeaways.
