Hexadecimal number to char using JavaScript

Question

How do I convert, for example, the string "C3" to its character using JavaScript? I've tried charCodeAt, toString(16) and everything, but it doesn't work.

var justtesting = "C3"; // There's an input here
var tohexformat = '\x' + justtesting; // Gives the wrong hexadecimal number

var finalstring = tohexformat.toString(16);

Answer 1

All you need is parseInt and possibly String.fromCharCode.

parseInt accepts a string and a radix, a.k.a the base you wish to convert from.

console.log(parseInt('F', 16));

String.fromCharCode will take a character code and convert it to the matching string.

console.log(String.fromCharCode(65));

So here's how you can convert C3 into a number and, optionally, into a character.

var input = 'C3';
var decimalValue = parseInt(input, 16); // Base 16 or hexadecimal
var character = String.fromCharCode(decimalValue);
console.log('Input:', input);
console.log('Decimal value:', decimalValue);
console.log('Character representation:', character);