键大于某个值的数组值的总和

function sumGreaterThanKey(arr, key) {
  let sum = 0;
  for (let i = 0; i < arr.length; i++) {
    if (arr[i] > key) {
      sum += arr[i];
    }
  }
  return sum;
}

const arr = [1, 2, 3, 4, 5];
const key = 3;
console.log(sumGreaterThanKey(arr, key)); // 输出 9