计算元音、辅音的出现次数 - JavaScript

javascriptweb developmentfront end technologyobject oriented programming更新于 2025/12/30 11:56:17

我们需要编写一个 JavaScript 函数，该函数接受一个包含英文字母的字符串，例如 −

const str = 'This is a sample string, will be used to collect some data';

该函数应返回一个包含字符串中元音和辅音计数的对象，即输出应为 −

{ vowels: 17, consonants: 29 }

示例

以下是代码 −

const str = 'This is a sample string, will be used to collect some data';
const countAlpha = str => {
   return str.split('').reduce((acc, val) => {
      const legend = 'aeiou';
      let { vowels, consonants } = acc;
      if(val.toLowerCase() === val.toUpperCase()){
         return acc;
      };
      if(legend.includes(val.toLowerCase())){
         vowels++;
      }else{
         consonants++;
      };
      return { vowels, consonants };
   }, {
      vowels: 0,
      consonants: 0
   });
};
console.log(countAlpha(str));