andre/30-seconds-of-code
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30-seconds-of-code/snippets/3-digit-hexcode-to-6-digit-hexcode.md
iamsoorena b70b5b0d95 removing duplicate code and converting it to one line using shortHex.startsWith('#') ? 1 : 0 
making function more terse removing unnecessary empty strings.
2017-12-17 01:05:53 +03:30

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3-digit hexcode to 6-digit hexcode

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.

const convertHex = shortHex =>
  '#' + shortHex.slice(shortHex.startsWith('#') ? 1 : 0).split().map(x => x+x).join()
// convertHex('#03f') -> '#0033ff'
// convertHex('05a') -> '#0055aa'