Part 4 React components | React class components | Functional React components скачать в хорошем качестве

Part 4 React components | React class components | Functional React components

Component:- ---------- A component is a function/class which will display something to the user. It is the building block of the react. We can write components once and reuse the entire project. It helps to avoid duplicate code. A component may have CSS and js files. Component name must be written using camel case and starts with the capital as shown below. Components come in two types, Class components, and Function components. 1. function based components 2. class-based components Note:- In older React code bases, you may find Class components primarily used. function components are introduced from React 16.8 2019 When the state object changes, the component re-renders. Refer to the state object anywhere in the component by using this. state.property name syntax: