Illustration of JavaScript Promise states: pending, fulfilled with value, and rejected with error using resolve and reject functions.

This diagram visualizes the three states of a JavaScript Promise: pending, fulfilled, and rejected. It begins with the new Promise(executor) in a pending state with an undefined result. Upon execution, the promise either resolves with a value and transitions to the fulfilled state, or rejects with an error and transitions to the rejected state. This image helps in understanding asynchronous programming flow and error handling in JavaScript using Promises.

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