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Javascript converts rgb color into hexadecimal format_javascript skills

WBOY
WBOYOriginal
2016-05-16 15:50:391284browse

I tried it myself and it works great

function zero_fill_hex(num, digits) {
 var s = num.toString(16);
 while (s.length < digits)
  s = "0" + s;
 return s;
}
function rgb2hex(rgb) {

 if (rgb.charAt(0) == '#')
  return rgb;
 
 var ds = rgb.split(/\D+/);
 var decimal = Number(ds[1]) * 65536 + Number(ds[2]) * 256 + Number(ds[3]);
 return "#" + zero_fill_hex(decimal, 6);
}

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