如何在Javascript中创建Arrays的object？

Question

I want to create a object of Arrays, how to create it?

const obj = {};
let i = 1;

function* id() {
  while (true) {
    i++;
    yield i;
  }
}

function data(first, middle, last) {
  const arr = [first, middle, last];
  let key = id();
  obj[key.next().value] = arr;
  console.log(obj);
}

data("rohit", "kumar", "sharma");
data("rohit", "kumar", "sharma");

I got the correct out but i want to ask is any other method?

Answer 1

Your code is fine but it forces you to create only array of three elements. Here is a code more flexible:

const obj = {};

function data(arr) {
  let key = id();
  obj[key.next().value] = arr;
  console.log(obj);
}

data(["rohit", "kumar", "sharma"]);
data(["rohit", "kumar", "sharma"]);

I don't know your need but creating an object with incremental value as properties make me think that an array of array would be easier to use instead.

EDIT

To simplify everything if you really want to keep an object:

const obj = {};
let i = 0;
function data(arr) {
  obj[i++] = arr;
  console.log(obj);
}

data(["rohit", "kumar", "sharma"]);
data(["rohit", "kumar", "sharma"]);

If you are ok to use an array, you don't need a function:

const arr = [];

arr.push(["rohit", "kumar", "sharma"])
arr.push(["rohit", "kumar", "sharma"])

console.log(arr[0])
console.log(arr[1])