Counting vowels in javascript

Question

I use this code to search and count vowels in the string,

a = \"run forest, run\";
a = a.split(\" \");
var syl = 0;
for (var i = 0; i < a.length - 1; i++) {
         


        

Answer 1

The simplest way is

s.match(/[aeiou]/gi).length