How to check if a string is a valid hex color representation?

Question

For example:

AA33FF = valid hex color

Z34FF9 = invalid hex color (has Z in it)

AA33FF11 = invalid hex color (h

Answer 1

function validColor(color){
  var $div = $("
");
  $div.css("border", "1px solid "+color);
  return ($div.css("border-color")!="")
}

https://gist.github.com/dustinpoissant/22ce25c9e536bb2c5a2a363601ba261c

Note: This requires jQuery

This works for ALL color types not just hex values. It also does not append unnecessary elements to the DOM tree.