当我运行我的 `node file.js 1 23 44` 脚本时，它不会打印任何东西

Question

When I run node file.js 1 23 45 , it's supposed to printout One TwoThree FourFive but for some reason it's not printing out. I think the script runs fine because I get no issues running it but it just doesn't printout anything. Am I missing something or am I completely wrong?

 const numbersMap = new Map([ [ "0", "Zero" ], [ "1", "One"], [ "2", "Two"], [ "3", "Three"], [ "4", "Four"], [ "5", "Five"], [ "6", "Six"], [ "7", "Seven"], [ "8", "Eight"], [ "9", "Nine"] ]); function toDigits (integers) { const r = []; for (const n of integers) { const stringified = n.toString(10); let name = ""; for (const digit of stringified) name += numbersMap.get(digit); r.push(name); } console.log(r.join()); }

Answer 1

You defined the Map and the method toDigits , but are not actually calling the method. You can do that by adding toDigits(...) . To parse the command line arguments you can use process.argv . This will give you something like

[
  'node',
  '/path/to/script/index.js',
  '1',
  '23',
  '45'
]

Which you can use eg, with process.argv.slice(2) in your code.

const numbersMap = new Map([
  [ "0", "Zero" ],
  [ "1", "One"],
  [ "2", "Two"],
  [ "3", "Three"],
  [ "4", "Four"],
  [ "5", "Five"],
  [ "6", "Six"],
  [ "7", "Seven"],
  [ "8", "Eight"],
  [ "9", "Nine"]
]);

function toDigits (integers) {
  const r = [];

  for (const n of integers) {
    const stringified = n.toString(10);
    let name = "";

    for (const digit of stringified)
      name += numbersMap.get(digit);
    r.push(name);
  }

  console.log(r.join());
}

// You can parse command line arguments like this:
const integers = process.argv.slice(2);

// and then pass them on
toDigits(integers);