从数组中删除包含字母和数字的字符串

function removeAlphaNumericStringsFromArray(arr) {
  for (let i = arr.length - 1; i >= 0; i--) {
    if (/[a-zA-Z0-9]/.test(arr[i])) {
      arr.splice(i, 1);
    }
  }
  return arr;
}

// 示例用法
const array = ["abc", "123", "abc123", "456"];
const result = removeAlphaNumericStringsFromArray(array);
console.log(result); // 输出: ["123"]