How to Build a Counter App with ReactJS, TypeScript, and Functional Components
In this tutorial, you will learn how to build a simple counter app using ReactJS, TypeScript, and functional components. The counter app allows users to increment, decrement, and reset a counter value displayed on the screen.
The code provided sets up the initial state of the counter using the useState hook, which defines a state variable state and a function setState to update it. The CounterState type is defined to specify the structure of the state object.
The app renders the current count value inside an h2 tag, which is updated whenever the count changes. The decrement and increment functions modify the count by decreasing and increasing it respectively, using the setState function to update the state. The reset function sets the count back to 0.
The buttons for decrement, increment, and reset are implemented with corresponding click event handlers. Each button is styled with some margin to provide spacing between them.