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Merge pull request #158 from fejes713/master

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Updated capitalize function to use more modern approach.
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Angelos Chalaris
2017-12-15 13:42:16 +02:00
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parent 4315f06a02 bb131cf6eb
commit c35faf3b1f
1 changed files with 4 additions and 3 deletions
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snippets/capitalize-first-letter.md
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### Capitalize first letter
Use `slice(0,1)` and `toUpperCase()` to capitalize first letter, `slice(1)` to get the rest of the string.
Use destructuring and `toUpperCase()` to capitalize first letter, `...rest` to get array of characters after first letter and then `Array.join('')` to make it a string again.
Omit the `lowerRest` parameter to keep the rest of the string intact, or set it to `true` to convert to lower case.
```js
const capitalize = (str, lowerRest = false) =>
str.slice(0, 1).toUpperCase() + (lowerRest ? str.slice(1).toLowerCase() : str.slice(1));
const capitalize = ([first,...rest], lowerRest = false) =>
first.toUpperCase() + (lowerRest ? rest.join('').toLowerCase() : rest.join(''));
// capitalize('myName') -> 'MyName'
// capitalize('myName', true) -> 'Myname'
```