Dev Nest Guide
javascriptbeginner10 minutes

Reverse a String Using a JavaScript Function

Create a function that takes a string as input and returns the string reversed. This challenge will help you understand basic string manipulation and working with array methods in JavaScript.

Challenge prompt

Write a JavaScript function named reverseString that accepts a single parameter (a string) and returns the string with its characters in reverse order. For example, if the input is 'hello', the function should return 'olleh'.

Guidance

  • • Think about how you can convert the string into an array to use array methods.
  • • Consider using built-in JavaScript methods like split(), reverse(), and join() for a simple solution.
  • • Remember that strings are immutable, so you cannot reverse them directly.

Hints

  • • Use the split('') method to convert the string into an array of characters.
  • • Use the reverse() method to reverse the array elements.
  • • Use the join('') method to combine the reversed array back into a string.

Starter code

function reverseString(str) {
  // Your code here
}

Expected output

reverseString('hello') // 'olleh' reverseString('DevDuel') // 'leuveD' reverseString('JavaScript') // 'tpircSavaJ'

Core concepts

string manipulationarray methodsfunctions

Challenge a Friend

Send this duel to someone else and see if they can solve it.