epam-short-track

Core JS mentors interview #1

  1. What is the difference between Git and GitHub?
  2. Describe the Git flow branching model.
  3. What is the difference between git pull and git fetch, git reset and git revert, git merge and git rebase?
  4. What are the key differences between primitive data types and Object data types in JavaScript?
  5. How does the typeof operator work in JavaScript, and when would you use it?
  6. What are the differences between var, let, and const in JavaScript? Can you explain what hoisting and TDZ are?
  7. How do you use conditional statements in JavaScript to make decisions in your code?
  8. How does destructuring work in JavaScript, and give examples of its use with arrays and objects?
  9. What are some ways to create arrays in JavaScript? What array methods that modify the original array in JavaScript?
  10. Explain how you would use array operations such as sort, filter, find, map, and reduce in JavaScript.
  11. What are static methods in JavaScript? Provide an example.
  12. Can you explain automatic data type conversion in JavaScript?
  13. What is the difference between Object.create() and new keyword for creating objects?
  14. What are property descriptors in JavaScript objects and how can you manipulate them? How do getter and setter methods work in JavaScript objects?
  15. How can you clone an object in JavaScript? How can you prevent modifications to an object in JavaScript?
  16. Explain the difference between function declarations, function expressions, and arrow functions.
  17. How do default parameters work in JavaScript functions and why are they useful? What is a rest operator and how can it be used in functions? Rest operator vs arguments.
  18. How does the this keyword work in different types of functions? What are the call, apply, and bind methods? Provide examples of how and when you would use each.
  19. How does use strict mode affect this behavior in functions?
  20. Explain the concept of closure in JavaScript. Explain functional patterns in JavaScript: IIFE (Immediately Invoked Function Expressions), callback, memoization, currying, chaining, higher-order function, recursion.
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