Color Conversion in JavaScript

Color Conversion Algorithms in JavaScript

RGB to Hexadecimal

Converting Base 10 to Hexadecimal

The toHex() function converts a decimal number to hexadecimal (base 16).

Parameter

A String dec holds the number that is to be converted to hex.

Returns

Hexadecimal number.

To convert a number to hexadecimal, parseInt is used to parse a Number from the String dec. The toString() method is called on this number with the radix 16. The radix 16 in the call to the toString() method will convert a base 10 number to a base 16 number (but as a String not a Number). 

 function toHex(dec){
 	var result= (parseInt(dec).toString(16));
 	if(result.length ==1) result= ("0" +result);
 	return result.toUpperCase();
}

toString

The toString() is a method of many different types of objects. Here it is called on an instance of the Number object.

Parameters

The radix parameter is an optional positive integer. Specifying the radix parameter sets the base of the numbering system that number is to be converted from (hexadecimal is base 16).

Returns

A String.

 

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