按键组合两个数组

function combineArrays(arr1, arr2) {
  const combinedArray = [];
  
  for (let i = 0; i < arr1.length; i++) {
    for (let j = 0; j < arr2.length; j++) {
      combinedArray.push(arr1[i] + arr2[j]);
    }
  }
  
  return combinedArray;
}

const array1 = [1, 2, 3];
const array2 = ['a', 'b', 'c'];

const combined = combineArrays(array1, array2);
console.log(combined); // Output: [ '1a', '1b', '1c', '2a', '2b', '2c', '3a', '3b', '3c' ]