根据值在数组中查找最近的元素，而不是在值超过javascript中的最接近值时查找

function findClosestElement(arr, target) {
  let minDiff = Infinity;
  let closestElement = null;

  for (let i = 0; i < arr.length; i++) {
    const diff = Math.abs(arr[i] - target);
    if (diff < minDiff) {
      minDiff = diff;
      closestElement = arr[i];
    }
  }

  return closestElement;
}

const arr = [1, 3, 5, 7, 9];
const target = 6;
const closestElement = findClosestElement(arr, target);
console.log("最近的元素：", closestElement);