Fetch API, GET, POST, PUT and DELETE Handling Errors with Fetch 404 500

Описание: In this tutorial, you will learn about fetch API. This is a modern method to replace ajax.

Fetch API return promise so it is better to learn about a promise.
Link    • Promises, Promise.all, async await and Cal...  

Learn about callbacks from this link    • Callbacks Asynchronous And Synchronous in ...  

Rest API for this tutorial learn from this tutorial link    • Rest API with Express and MySQL (prevent s...  

Get the code from this link https://github.com/adbilagi/fetch

fetch returns promise irresspective of 500 or 404 error. we need to resolve promise to get data from fetch