I Faced These TCS 1st round Interview Questions in 2026 | 24x7 React Support
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In this video, I am sharing real TCS technical interview questions from 2026 that were actually asked from me, focused on JavaScript and React JS.
This video is completely based on my Top 20 Interview Questions PDF, where I explain each question with simple code examples.
If you are preparing for a TCS interview, this video will help you understand:
Most frequently asked JavaScript interview questions
Important React JS concepts for TCS
Questions interviewers expect you to explain with code
How to answer confidently in technical rounds
Topics Covered:
var, let, const
Hoisting and Closures
Event Loop and Promises
map, filter, reduce
React basics like Props and State
useState and useEffect
Controlled components
useMemo and useCallback
React performance optimization
This video is useful for:
TCS Freshers
1 to 3 Years Experience Developers
JavaScript and React Learners
Last minute interview revision
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