Free online courseUsing the Fetch API in JavaScript and ASP.NET Core

Course Description

Learn how to connect modern JavaScript front ends with ASP.NET Core back ends using the Fetch API in this free web development course. Designed for developers who want practical, hands-on skills, it guides you through the full request lifecycle, from understanding how Fetch works to building real interactions with a Web API.

You will start with a clear overview of the Fetch API and how it differs from older approaches, then move into creating a minimal ASP.NET Core Web API server to provide data endpoints. From there, you will use Fetch to retrieve data and understand what comes back in the response, including how to validate results and handle common issues.

As you progress, you will use Fetch to perform insert, update, and delete operations so you can build complete CRUD workflows. The course then brings everything together by creating a CRUD web page that communicates with your API, helping you see how client-side JavaScript and server-side ASP.NET Core work together in a clean, maintainable way.

Ideal for anyone building interactive web apps, this course focuses on practical patterns you can apply immediately when working with REST-style endpoints, JSON payloads, and typical web application data operations.