17 lines
325 B
Markdown
17 lines
325 B
Markdown
---
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title: countVowels
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tags: string,beginner
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---
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Retuns `number` of vowels in provided string.
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Use a regular expression to count the number of vowels `(A, E, I, O, U)` in a `string`.
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```js
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const countVowels = str => (str.match(/[aeiou]/gi) || []).length;
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```
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```js
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countVowels('foobar'); // 3
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countVowels('gym'); // 0
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``` |