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

Question

当我运行node file.js 1 23 45 时，它应该打印出One TwoThree FourFive，但由于某种原因它没有打印出来。我认为脚本运行良好，因为我运行它没有任何问题，但它只是没有打印出任何东西。我错过了什么还是我完全错了？

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

您定义了 Map 和方法 toDigits，但实际上并未调用该方法。您可以通过添加toDigits(...) 来做到这一点。 要解析命令行参数，您可以使用process.argv。这会给你类似的东西

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

您可以在代码中使用例如process.argv.slice(2)。

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);