使用JavaScript将RGB转换为十六进制

Posted 2021-02-25

You have a RGB value and want to convert it into Hexadecimal mode, here’s how to do it using javascript.

function Rgb() {
     var red = returnHex(200);
     var green = returnHex(255);
     var blue = returnHex(155);
     var hex = "#" + red + green + blue;
 
     alert(hex);            
}
 
// Convert to Hex
function returnHex(num) {
     // Hex can store 16 different values in 1 character
     if (num == null) return "00";
     num = num.length < 2 ? "0" + num : num
     return num.toString(16);
}