vowel check in javascript

1// check the word is vowel or not
2let words = "aeiou";
3
4let newWords = "";
5
6function isVowelOrNot(words) {
7   for (let word of words) {
8      if (
9         word === "a" ||
10         word === "e" ||
11         word === "i" ||
12         word === "o" ||
13         word === "u"
14      ) {
15         newWords = newWords + word;
16      }
17   }
18   if (newWords === words) {
19      return true;
20   } else {
21      return false;
22   }
23}
24
25let result = isVowelOrNot(words);
26console.log(result);