从数组中过滤掉奇数，然后返回索引位置

function filterOddNumbers(arr) {
  let filteredArr = [];
  let indexes = [];

  for (let i = 0; i < arr.length; i++) {
    if (arr[i] % 2 === 0) {
      filteredArr.push(arr[i]);
      indexes.push(i);
    }
  }

  return indexes;
}

// 示例用法
const numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
const filteredIndexes = filterOddNumbers(numbers);
console.log(filteredIndexes); // 输出 [1, 3, 5, 7, 9]