Javascript Reverse Array with String Values

gistfile1.txt

/*
Write a function that reverses a string. The input string is given as an array of characters char[].

Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory.

You may assume all the characters consist of printable ascii characters.
*/

const arr = ["h", "e", "l", "l", "o"]

var reverseString = function(s) {
	let left = 0
	let right = s.length - 1
	
	while(left < right){
		let temp = s[left]
		s[left++] = s[right]
		s[right--] = temp
	}
	
	return s
}

reverseString(arr)