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Merge pull request #162 from Pl4gue/patch-1

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Create 3DigHexcode-to-6DigHexcode.md
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Angelos Chalaris
2017-12-16 13:40:58 +02:00
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### 3DigHexcode to 6DigHexcode
Use `Array.map()`, `split()` and `Array.join()` to join the mapped array for converting a three-digit RGB notated hexadecimal colorcode to the six-digit form.
```js
const convertHex = shortHex =>
shortHex[0] == '#' ? ('#' + shortHex.slice(1).split('').map(x => x+x).join('')) :
('#' + shortHex.split('').map(x => x+x).join(''));
// convertHex('#03f') -> '#0033ff'
// convertHex('05a') -> '#0055aa'
```