将不同大小的数组组合成一个对象？

const arrays = [ [1, 2], [3, 4, 5], [6] ];

const combinedObject = arrays.reduce((obj, arr, index) => {
  obj[`array${index + 1}`] = arr;
  return obj;
}, {});

console.log(combinedObject);

{
  array1: [1, 2],
  array2: [3, 4, 5],
  array3: [6]
}

const arrays = [ [1, 2], [3, 4, 5], [6] ];

const combinedObject = {};

arrays.forEach((arr, index) => {
  combinedObject[`array${index + 1}`] = [...arr];
});

console.log(combinedObject);

{
  array1: [1, 2],
  array2: [3, 4, 5],
  array3: [6]
}