The percentClickHandler function checks if there’s any entered value ( num) or calculated value ( res) and then calculates the percentage using the built-in Math. Learn React hooks, React API data fetching, React Hooks, proper React project structure and much. Wrapper.js import './Wrapper.css' const Wrapper = ( percentClickHandler Series of real-world projects that you can learn React with. What you really need to start to develop is your knowledge of the library itself. Here are some of the projects we are going to build in this course 1. Starting new React projects used to be a huge hassle - there were dozens of dependencies, configuration files, and other up front requirements before you.

If you already know JavaScript, React shouldn’t be too difficult to learn. It will also allow us to center the whole app afterward. React is a special JavaScript library designed for user interfaces so the most interesting React projects will be tailored toward User Interfaces (UI) and User Experience (UX). The Wrapper component will be the frame, holding all the children components in place. If you don’t want to create those folders and files manually, you can use the following one-liner to get things set up quickly: cd src & mkdir components & cd components & touch Wrapper.js Wrapper.css Screen.js Screen.css ButtonBox.js ButtonBox.css Button.js Button.css Those are Wrapper, Screen, ButtonBox, and Button.įirst create a components folder inside the src folder.

Since we’ve already done some wireframing, we already know the main building blocks of the application.

React js projects