React Starter

React Starter

A minimal React starter demonstrates the difference between a current state value and the value rendered one frame earlier. The application uses React’s `useState` to hold an initial count of 20, and `useRef` combined with `useEffect` to store the previous count after each render. It displays both numbers in an `h1` element. The example loads React and ReactDOM from unpkg CDN, renders via `ReactDOM.render`, and tracks the previous value by updating a ref inside a side-effecting hook, showing a simple state-update pattern without external data.

87% match

Fork of React Starter

This example renders a simple counter that increments every second. The display shows the current count in a large heading, with a button to pause or resume the timer. Built with the React framework, it uses the `useState` and `useEffect` hooks to manage state and initiate the `setInterval` callback. The `clearInterval` method stops the timer when the toggle is engaged, demonstrating a basic animation loop within a React component.

VVenkataSaiKumar531

76% match

React Hooks Starter

A React Hooks starter demonstrates a counter that adds or removes apple emojis in a grid layout. The interface uses `React.useState` to manage the current message and status text, while `React.useReducer` handles increment and decrement actions on an initial count of 24. `React.useEffect` updates the status message after the tree mounts, and `React.useRef` holds a reference to the main div. The code imports React, ReactDOM, and a CSS file, then renders the entire component with `ReactDOM.render`.

Ttanvee gujral

React Starter

This React Starter example displays a row of numbers from zero to twenty, generated from a JavaScript array, and renders it as a single line of text. The page uses the React and ReactDOM libraries to mount a component into a root HTML element, with the array being computed through a loop and a squaring function applied to a sample value. It demonstrates a minimal React setup with inline styling and a custom font size for the output.

useState

A React counter demonstrates the `useState` hook for managing numeric state, with buttons that increment and decrement a displayed number. The code uses functional updates to avoid stale closures and shows how initial state can be provided either directly or lazily via a function, logging console messages to illustrate when each initialization runs. Rendering uses `ReactDOM.render` into a root div, with the interface styled by large CSS font sizes.

RRichard Burd

React State Hook example

This example demonstrates a minimal React component that uses the `useState` hook from React 17 to track and display a numeric click counter. It renders a button and a paragraph showing how many times the button has been clicked, with each click updating the state and re-rendering the component. Built with ReactDOM rendering into a root div, the visualization uses `d3.v7` for potential data manipulation but does not directly call any d3 functions. The code shows a simple state-driven interaction rather than a graphical chart.

MMichael

React Starter

This example demonstrates a simple React application that renders a component containing two nested `<h1>` elements repeated in two `<div>` containers. The component, defined as `App`, uses ReactDOM.render to mount it into two separate DOM elements, `root` and `root1`, which have distinct background colors defined in CSS. The code imports React and ReactDOM from their production UMD bundles, showcasing basic component structure and multiple render targets within a single page.

74% match

React Starter

This example demonstrates a minimal React application displaying the number 6 as large, centered text. It initializes a React root element and renders a single component using React 16.13.1 and ReactDOM. The component reads a hardcoded variable and outputs it within a styled div. Array objects are defined but unused, and the page loads the React libraries from a CDN before bundling the main JavaScript file.