Explain the srcset and sizes attributes for <img>.

Short answer: They help browsers pick the best image for the user’s device and screen size. Follow me on LinkedIn:

Example code

<img src="small.jpg" srcset="medium.jpg 768w, large.jpg 1200w" sizes="(max-width: 768px) 100vw, 50vw" alt="Landscape"> srcset defines available image files and their widths. sizes tells the browser how much space the image will take on different screens. Key Takeaway: srcset + sizes = responsive images that load efficiently across devices.

Real-world example (ShopNest)

ShopNest’s browser cart uses modern JavaScript: fetch APIs with async/await, modules, and clear error handling.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.