How do promises work in JavaScript?

Question

I just implemented my first function that returns a promise based on another promise in AngularJS, and it worked. But before I decided to just do it, I spent 2 hour

Answer 1

For the simplicity to understand about the promises in Javascript. You can refer below example. Just copy paste in a new php/html file and run.

1. Click on Test button,
2. It will create new promise,
3. if condition will be true it fulfill the response,
4. after that promise.then called and based on the fulfill it will print the result.
5. In case of reject promise.then returns the error message.