Reversing words within a string JavaScript

We are required to write a JavaScript function that takes in a string that might contain spaces. Our function should first split the string based on the spaces and then reverse and join and return the new string.

For example − If the input string is −

const str = 'this is a word';

Then the output should be −

const output = 'siht si a drow';


const str = 'this is a word';
const reverseWords = (str = '') => {
   const strArr = str.split(' ');
   for(let i = 0; i < strArr.length; i++){
      let el = strArr[i];
      strArr[i] = el
   return strArr.join(' ');


And the output in the console will be −

siht si a drow