I went through a web developer interview at Meta, starting with an initial online round to test my programming and problem-solving skills.

After passing that, I moved on to deeper technical rounds where they focused on my front-end knowledge, like HTML, CSS, and JavaScript. They asked me to optimize page performance and handle large images and long text efficiently.

They also evaluated my back-end skills, including connecting the front-end to the back-end, designing APIs, and managing databases.

I faced practical challenges that required writing live code to solve performance issues or handle large data lists. Sometimes, they asked system design questions to create a platform capable of supporting millions of users.

Finally, there was a cultural round to assess my fit with the company’s values and team spirit.

Overall, the interview felt like a real test of my ability to think quickly, write clean code, and solve real-world problems effectively.

You have a web page that displays a list of items (e.g., user posts). Some items contain very large images, and some have very long text content.

How would you optimize the loading performance and user experience when displaying this list?

Provide a practical example using HTML, CSS, and JavaScript to implement lazy loading or incremental rendering (e.g., render part of the list first and load the rest as the user scrolls).