search vowel in string in java script code example

Example 1: find vowel & consonants in a string java script

const str = "The quick brown fox jumps over a lazy dog"; 
const vowels = str.match(/[aeiou]/gi); 
const consonants = str.match(/[^aeiou]/gi);   
vowels.concat([''],consonants).forEach(k => { console.log(k); } );

Example 2: count vowels in a string javascript

// BEST and FASTER implementation using regex
const countVowels = (str) => (str.match(/[aeiou]/gi) || []).length