What are the three states of promise?

Web Development
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#1

Promises are used to handle asynchronous operations. They provide an alternative approach for callbacks by reducing the callback hell and writing the cleaner code. Promises have three states:

  1. Pending: This is an initial state of the Promise before an operation begins
  2. Fulfilled: This state indicates that the specified operation was completed.
  3. Rejected: This state indicates that the operation did not complete. In this case an error value will be thrown.