Front-End Development Development Tutorials, Guides & Insights

• Using AJAX or Fetch API, JavaScript retrieves and updates data without reloading the page.
• Example: Infinite scrolling on social media feeds.

• Frameworks and libraries like React, Angular, and Vue.js make it easier to build Single Page Applications (SPAs).
• Examples: Gmail, Netflix, Trello.

In this script:

• We use `querySelector` to select the dropdown toggle link and the dropdown menu.
• We add an event listener to toggle the display of the dropdown menu when the "Services" link is clicked.
• We add a second event listener to close the dropdown menu if the user clicks outside of it.

{
  "name": "my-component-library",
  "version": "1.0.0",
  "main": "src/index.js",
  "scripts": {
    "build": "react-scripts build",
    "storybook": "start-storybook -p 6006",
    "build-storybook": "build-storybook"
  },
  "peerDependencies": {
    "react": "^17.0.0",
    "react-dom": "^17.0.0"
  }
}

Add an entry point for your library in src/index.js:

Before you start building your DApp, you’ll need to set up your development environment. Here’s what you need:

• Node.js: For running the development server and installing dependencies.
• Truffle Suite: A development framework for Ethereum smart contracts and DApps.
• Ganache: A personal Ethereum blockchain for testing smart contracts locally.
• MetaMask: A browser extension wallet for interacting with the Ethereum blockchain.

Emotion is a performant and flexible CSS-in-JS library that provides both styled and traditional CSS approaches.

• Very fast and lightweight.
• Flexible API that supports multiple styling methods.
• Excellent TypeScript support.