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What is lazy loading and how can you implement it? - Code Stap
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What is lazy loading and how can you implement it?

What is lazy loading and how can you implement it?

Answer: Lazy loading is a design pattern that delays the initialization of an object until it is needed, improving performance and resource management, especially in web applications.

To implement lazy loading, you can:

1. Use a Proxy Object: Create a proxy that represents the real object. The real object is instantiated only when a method is called on the proxy that requires it.

2. Images and Resources: For images on a webpage, use the `loading=”lazy”` attribute in “ tags, or implement JavaScript to load images only when they are near the viewport.

3. Dynamic Imports: In JavaScript, use `import()` to load modules only when they are needed, reducing the initial load time.

4. Frameworks and Libraries: Use libraries or frameworks that have built-in support for lazy loading, such as React (with React.lazy) or Angular (with route-based lazy loading).

By employing lazy loading, you can enhance performance and user experience by reducing initial load times.

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