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Home/Kits/JavaScript Interview Kit
⚙️
Beginner → Intermediate

Stop Failing First Rounds. Master JavaScript the Way Interviewers Actually Test It.

The only JS prep kit built around real patterns from Razorpay, Swiggy, CRED, and Zepto interviews, not textbook theory.

★★★★★
4.8(183 ratings)
1,800+ engineers enrolledUpdated July 2026

✦What's Inside

4 PDFs · 49 chapters

  1. 01How JavaScript Runs Your Code
  2. 02Data Types, Coercion & Equality
  3. 03Functions In Depth
  4. 04Closures
  5. 05The `this` Keyword & Binding
  6. 06Objects In Depth
  7. 07Prototypes & Inheritance
  8. 08Arrays & Iteration
  9. 09Asynchronous JavaScript
  10. 10Error Handling
  11. 11Modern JavaScript (ES6+)
  12. 12Numbers, Math & Precision
  13. 13Strings & Regular Expressions
  14. 14Dates, JSON & Serialization
  15. 15Metaprogramming: Proxy & Reflect
  16. 16Memory, Performance & Best Practices

✦Everything Included

  • JS Learning Handbook
  • 80+ Interview Q&A
  • Coding & Polyfills Handbook
  • Quick Revision Cheatsheet
  • Output prediction questions
  • Read online in your portal + PDFs
  • Lifetime updates

✦Who Is This For?

This kit was built specifically for:

🎓

Freshers & 0-1 yr devs

Need to nail JS fundamentals before your first product company interview.

🛠️

Self-taught developers

You've built projects but never done structured interview-pattern prep.

🔄

React devs skipping JS rounds

Strong in React but tripping on closures, event loop, and prototype questions.

⏱️

Interview in < 2 weeks

Need the fastest, densest JS prep available. This is built for that exact night.

Real results from real engineers

1,800+
Engineers prepared
90%
Clear 2+ rounds
4.8★
Average rating
₹6 LPA
Avg. first offer bump

✦What Engineers Are Saying

RS
Rahul S.Got offer at PhonePe
★★★★★

“Closures, event loop, output questions, the JS kit had all the exact patterns I was asked. Cleared PhonePe's first round without breaking a sweat.”

DM
Divya M.Frontend Dev · Meesho
★★★★★

“I'd failed 3 JS rounds before this. The answer templates alone changed how I explain things under pressure. Got placed at Meesho in 3 weeks.”

KR
Karthik R.SDE-1 · Razorpay
★★★★★

“The Quick Revision Guide is insane value. Opened it the morning of my Razorpay interview and walked in confident. Cleared all 3 technical rounds.”

✦Frequently Asked Questions

₹299
₹799
63% off
  • Instant download, Drive access + read online in your portal
  • Works on mobile, tablet & desktop
  • One-time purchase, no subscription
  • Free updates forever
  • Secure checkout via Dodo Payments
Questions? Contact us
Instant Access
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Lifetime Updates
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1,800+
Engineers prepared
Priority Support
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4.8★ Rating
183+ reviews