Reverse an array in place by swapping

reverse.js

function reverseArr(arr) {
   const n = parseInt(arr.length/2);
   
   for(let i = 0; i < n; i++) {
      const temp = arr[i];
      arr[i] = arr[arr.length - i - 1];
      arr[arr.length - i - 1] = temp;
   }
   return arr;
}