Searching Algorithms (linear search, binary search)

How does ternary search compare to binary search in terms of comparisons?
function ternarySearch(arr, target) {
  let left = 0;
  let right = arr.length - 1;
  
  while(left <= right) {
    const third = Math.floor((right - left) / 3);
    const mid1 = left + third;
    const mid2 = right - third;
    
    if(arr[mid1] === target) return mid1;
    if(arr[mid2] === target) return mid2;
    
    if(target < arr[mid1]) right = mid1 - 1;
    else if(target > arr[mid2]) left = mid2 + 1;
    else {
      left = mid1 + 1;
      right = mid2 - 1;
    }
  }
  return -1;
}
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