Create a Cascading Dropdown in ReactJS

Introduction

In this article, we will learn how to create a cascading dropdown using ReactJS and Web API. A cascading dropdown is a group of dropdowns where the value of one dropdown depends upon another dropdown value. Child dropdown values are populated based on the item selected in the parent dropdown.

Prerequisites

We should have basic knowledge of React.js and Web API.
Visual Studio and Visual Studio Code IDE should be installed on your system.
SQL Server Management Studio.
Basic knowledge of Bootstrap and HTML.

You may also like: Everything React: Tutorials for Beginners and Experts Alike.

Create a Table in the Database

Open SQL Server Management Studio, create a database named "CascadingDemo", and in this database, create three tables and some demo data in the tables:

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