string is not returning correct reverse string in javascript

Question

I am trying to reverse the string using following function but it doesn't return correct string. as below i tried with 'devesh' it gives 'hseesh'

var reverseString = function(s) {
    let j = 0
    for(let i=s.length-1; i>=0; i--){
        s[j++] = s[i]
    }
    return s
};

console.log(reverseString(['d', 'e', 'v', 'e', 's', 'h']))
// ['h', 's', 'e', 'v', 'e', 'd']`enter code here`

Answer 1

It's not working because you're overwriting the s inside the for loop,

instead, create an empty one and fill it :

var reverseString = function(s) {
  let j = 0;
  let newS = [];

  for (let i = s.length - 1; i >= 0; i--) {
    newS[j++] = s[i]
  }
  return newS;
};

console.log(reverseString(['d', 'e', 'v', 'e', 's', 'h']))