问如何使用Javascript来计算1000 s、100 s、10 s、1 s在一个数字中的数量？

EN

function get(num){
      const thousands = Math.floor(num/1000)
      const hundreds = Math.floor((num-thousands*1000)/100);
      const tens = Math.floor((num-thousands*1000-hundreds*100)/10);
      const units = Math.floor(num-thousands*1000-hundreds*100-tens*10)
      return [
        thousands,
        hundreds,
        tens,
        units
      ]
}

const [th,hu,te,un] = get(73284)

console.log("Thousands=",th);
console.log("Hundreds=",hu);
console.log("Tens=",te);
console.log("Units=",un);

const f = (n) => {
    let div = 1000;
    const result = [];
    for (let i = 0; i < 4 && n; i++, n %= div, div /= 10) {
        result.push(Math.floor(n / div));
    }
    return result;
}
console.log(f(73284));

const input = 73284
const divider = 1000

const amoutOfDividerInInput = input / divider .
// this returns 73.284, we don't want the .284 so we can use Math.floor.

const amountOfDividerInInputWithoutDecimal = Math.floor(amoutOfDividerInInput)

// we print the value
console.log("there are " + amountOfDividerInInputWithoutDecimal + " 1000s in " + input).

const input = 73284
const divider = 1000

const reminderOfTheDivision = input % divider;
// this gives us 284.

// we devide the divider by 10, 
const newDevider = divider / 10;

// we calculate the new amount and reminder
const amoutOfNewDividerInInput = Math.floor(reminderOfTheDivision / newDivider );

const reminderOfTheNewDivision = reminderOfTheDivision % newDivider

// we print the new values
console.log("There are " + amoutOfNewDividerInInput + " 100s in" + input)

function findDividingQuantity(reminder, divider) {
  // if the devider is less than 10, we simply print the reminder.
    if(divider < 10) {
    console.log('and ' + reminder + ' remains.');
    // and we returns to stop the recursion.
    return;
  }
  
  // otherwise, we get the current amount of the divider in the reminder.
  const amount = Math.floor(reminder / divider);
  
  // we then calculate how much is left after the first division,
  // this will become our new reminder.
  const newReminder = reminder % divider;
  
  // knowing how many of the divider there is in the input, we can print it.
  console.log(amount + " " + divider + "s.");
  
  // we call the function again, but with the new reminder
  // and the divider divided by 10
  findDividingQuantity(newReminder, divider / 10)
}

const input = 73284

console.log("In " + input + " there is: ");
// we call the function with the initial divider: 1000.
findDividingQuantity(input, 1000)