Angular Custom Reactive Form Control: A Step-by-Step Guide

WEI CHENG
4 min readMar 18, 2023

Angular’s Reactive Forms provide a powerful and flexible way to build complex forms with dynamic behavior. In addition to the built-in form controls, Angular also allows you to create custom form controls to fit your specific needs. In this article, we'll look at how to use Angular to make a custom reactive form control.

What is a Custom Reactive Form Control?

A custom reactive form control is a form control that you make to give a specific data input a unique user interface and behavior. This custom form control can be used in the same way as the built-in form controls provided by Angular, such as input, select, textarea, file uploader, editor, etc.

Creating a Custom Reactive Form Control

You need to implement the ControlValueAccessor interface in Angular if you want to make a custom reactive form control. This interface defines the methods that Angular uses to interact with the form control.

Here are the steps to create a custom reactive form control:

Step 1: Create a new component for your custom form control

To make a custom form control, you need to make a new component that implements the…

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