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30-seconds-of-code/snippets/capitalize-first-letter.md
Ivan Babak f53bbbe128 Capitalize first letter: safe against empty string
`""[0]` -> `undefined`
`"".slice(0, 1)` -> `""`
2017-12-11 18:29:37 -08:00

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### Capitalize first letter
Use `toUpperCase()` to capitalize first letter, `slice(1)` to get the rest of the string.
```js
var capitalize = str => str.slice(0, 1).toUpperCase() + str.slice(1);
```