13 lines
291 B
Markdown
13 lines
291 B
Markdown
### countVowels
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Retuns `number` of vowels in provided string.
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Use a regular expression to count number of vowels `(A, E, I, O, U)` in a `string`.
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```js
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const countVowels = str =>
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return (str.match(/[aeiou]/ig) || []).length;
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// countVowels('foobar') -> 3
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// countVowels('gym') -> 0
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```
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