Technical Screen

React JS and Java Coding Rounds

AppleFull Stack Engineer · Technical Screen · Jul 2026

React JS Coding Round In incognito mode, if you open a site like Amazon.com or Flipkart.com, what are some ways to optimize the page's load speed? Is JavaScript single-threaded or multi-threaded? What is the event loop? Does JS execute top to bottom, or the other way around? If you fetch 10M records via an API in JS and render them in a table in the UI, what problems show up in the UI? How would…

Shared by a candidate · reported Jul 2026. Interview formats change; use it as a guide, not a script.