🎯 Expand/Collapse Widget Demo

Example 1: Basic Widget

What is JavaScript?

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JavaScript is a high-level, interpreted programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS.

Key Features:

  • Dynamic typing and first-class functions
  • Prototype-based object-orientation
  • Event-driven and functional programming styles
  • Cross-platform compatibility

JavaScript enables interactive web pages and is an essential part of web applications. The vast majority of websites use it for client-side page behavior.

Example 2: Accordion Style

Web Development Best Practices

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Following best practices ensures your web applications are maintainable, performant, and accessible to all users.

Essential Practices:

  • Semantic HTML: Use appropriate HTML elements for their intended purpose
  • Responsive Design: Ensure your site works on all device sizes
  • Accessibility: Make your site usable for people with disabilities
  • Performance: Optimize images, minify code, and reduce HTTP requests
  • Security: Validate inputs and protect against common vulnerabilities

These practices help create better user experiences and more maintainable codebases.

Example 3: Minimal Style

CSS Flexbox Layout

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Flexbox is a one-dimensional layout method for arranging items in rows or columns. Items flex to fill additional space or shrink to fit into smaller spaces.

Main Concepts:

  • Flex Container: The parent element with display: flex
  • Flex Items: Direct children of the flex container
  • Main Axis: The primary axis along which flex items are laid out
  • Cross Axis: The axis perpendicular to the main axis

Flexbox makes it easier to design flexible responsive layout structures without using float or positioning.

Example 4: Advanced Topic

Understanding Async/Await in JavaScript

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Async/await is a modern way to handle asynchronous operations in JavaScript, built on top of Promises. It makes asynchronous code look and behave more like synchronous code.

Benefits:

  • Cleaner and more readable code compared to callbacks and Promise chains
  • Better error handling with try/catch blocks
  • Easier debugging with standard debugging tools
  • More intuitive control flow for complex asynchronous operations

When to Use:

Async/await is ideal for handling API calls, file operations, database queries, and any other operations that might take time to complete. It helps avoid "callback hell" and makes code more maintainable.