Top JavaScript Coding Interview Questions And Answers (2023)

  1. Write a code to display which character is coming how many times in a given string ?
  2. Write a function to check whether a string is a palindrome or not with time complexity of the code ?
  3. Given an array containing some numbers write a code to that will find out the missing number in the array's range ?
  4. Write a code to reverse all the words of a given string. For example :
    Input : “how are uoy”
    Output : “Woh era you”
  5. How to segregate 0s and 1s in an array in Javascript ?
  6. Write a function to check if an anagram of a string is palindrome or not ?
  7. Write a code to check if two strings are anagram of each other ?
  8. Write a code to group items of array by category ?
  9. How to get the maximum count of consecutive 1's in an array ?
  10. How do you write a factorial code in JavaScript ?
  11. Given an integer array, find the subarray with the largest sum, and return its sum ?
  12. How to merge two sorted arrays in JavaScript ?
  13. How do you check if a value is a prime number ?
  14. How to reverse a string in JavaScript using recursion ?


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