30-seconds-of-code/snippets/randomHexColorCode.md

randomHexColorCode

Generates a random hexadecimal color code.

Use Math.random to generate a random 24-bit(6x4bits) hexadecimal number. Use bit shifting and then convert it to an hexadecimal String using toString(16).

const randomHexColorCode = () => {
  let n = ((Math.random() * 0xfffff) | 0).toString(16);
  return '#' + (n.length !== 6 ? ((Math.random() * 0xf) | 0).toString(16) + n : n);
};

randomHexColorCode(); // "#e34155"
randomHexColorCode(); // "#fd73a6"
randomHexColorCode(); // "#4144c6"