Conditional rendering in React allows you to render different UI elements or components based on certain conditions. Here are the main ways to achieve conditional rendering in React: Using JavaScript Conditional Operators if/else statements: Use if/else statements to decide what to render. Ternary Operator: Use the ternary operator for inline Read more…
In React, events are similar to how events work in regular DOM elements but have some key differences. Here are the main points to understand about handling events in React: Event Naming In React, event names are written in camelCase, rather than lowercase. For example, instead of using onclick, you use onClick. Read more…
React Props (short for properties) are a mechanism for passing data from one component to another in React. They are used to transfer information from a parent component to its child components, making components reusable and dynamic. Immutability Props are immutable, meaning they cannot be modified by the receiving component. Read more…
React state is a key concept for managing data within a component. It allows you to create interactive and dynamic user interfaces by keeping track of the changes in data over time. Here’s an in-depth look at React state: State in Class Components In class components, state is a built-in Read more…
Arrow functions, introduced in ECMAScript 6 (ES6), provide a concise way to write function expressions in JavaScript. They are particularly useful for non-method functions. Here’s a detailed look at how arrow functions work: Syntax The syntax of an arrow function is shorter than traditional function expressions. Here’s the basic syntax: Read more…
React is a popular JavaScript library for building user interfaces, particularly single-page applications where you need a fast and interactive user experience. Here are the main components and concepts in React: Components Functional Components These are JavaScript functions that return React elements. They are typically used for presentational purposes and Read more…
Your React JSX code can be placed in a separate file. Let’s render a special button instead of the default react logo like https://www.weiy.city/2024/08/react-run-your-project-and-see-the-effect/ in our web page. We design the style for the button in a separate file Button.js Then import it in App.js and use it. Here is a new Read more…
Introduction to JSX in React JSX, or JavaScript XML, is a syntax extension for JavaScript used in React to describe the UI structure. It allows developers to write HTML-like code within JavaScript, which gets transformed into React elements. Here’s a brief introduction to JSX: Syntax: JSX is a JavaScript syntax Read more…
We had learned that ReactDOM.render() can render some thing to web page. Now let’s try to change the default content in the root node to render a new object. Remove <App /> and add our new code to show “hello world” on the web page: See the result on your browser after run npm run Read more…