15 lines
293 B
Markdown
15 lines
293 B
Markdown
### countVowels
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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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```
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