This is a collection of common Javascript interview questions you may need to answer.
I wrote a post for each of them explaining them in natural language.
Enjoy!
Basic Javascript questions
- Call bind apply
- Closure
- Prototype
- Difference between arrow and normal function
- Map ,Filter, Reduce
- The Event Loop
- Map and Set data structure
- How to Compare object is equal or not
- Literals
- Hoisting
Asynchronous Javascript Land
- Explain how Asynchronous Javascript works
- What happens in the Event Loop when we run Asynchronous Javascript code?
- Async
- Async await
- Promises
- Callback hell
- How would you use Async with map
- How would you use Async with foreach each
- async.waterfall
Advanced javascript questions
- Babel
- Generator Function
- Scaling – Horizontal & Vertical
- Middleware
- Cluster and Child threading
- Encrypt techniques
- Design patterns
Node Basic questions
- Architecture of NodeJs
- Event Emitter
- When NodeJs is used
- Security – Node App
Sample challenges
- Angram problem variations
- [95,9,7,4,3] make it max no. and original value should not change 995743
- Find string is a palindrome or not if not then find possibility of making palindrome and
return true and false eg: aabbbcc- true, MADAM- true, abca-false - [1,2,3,5,7,7,,8,9—-nth] find missing and duplicate number in sequence and return value
- Write a sum function with this call signature: sum(a)(b)
– shortest possible form
– explain the theorical concept behind this.
– explain some practical use
