javascript - 如何在 switch 语句中的字符串上使用正则表达式？

Question

我有一个 if else 语句来匹配带有元音和辅音的字符串，效果很好。我想用 switch 语句来整理它，但是使用 match() 不起作用。我错过了什么？

if else//返回元音:1，辅音:3

function getCount(words) {
  var v,
      c;
    if (words === '' || words === ' ') { 
      v=0;
      c=0;
    } else if(words.match(/[aeiou]/gi)) {
        v = words.match(/[aeiou]/gi).length;
        c = words.replace(/\s|\W/g, '').split("").length - v;
    } else {
        v = 0;
        c = 0;
    }
    return {
      vowels: v,
      consonants: c
    };
}

getCount('test');

switch//返回元音:0，辅音:0

function getCount(words) {
  var v,
      c;
    switch(words) {
      case words.match(/[aeiou]/gi):
        v = words.match(/[aeiou]/gi).length;
        c = words.replace(/\s|\W/g, '').split("").length - v;
        console.log("true");
        break;
      case '':
      case ' ':
        v = 0;
        c = 0;
        break;
      default:
        v = 0;
        c = 0;
    }
    return {
      vowels: v,
      consonants: c
    };
}

getCount('test');

Answer 1

// Code goes here

function getCount(words) {
  var v,
      c;
    switch(true) {
      case ( words.match(/[aeiou]/gi) !=null ):
        v = words.match(/[aeiou]/gi).length;
        c = words.replace(/\s|\W/g, '').split("").length - v;
        console.log("true");
        break;
      case (words==''):
      case (words==' '):
        v = 0;
        c = 0;
        break;
      default:
        v = 0;
        c = 0;
    }
    return {
      vowels: v,
      consonants: c
    };
}

console.log(getCount('test'));