Javascript character (ASCII) to Hex

Question

Hey all i am in need of something simple to convert character(s) into ASCII and then make that into a Hex code.

So as an example the "A" character would be:

0xF100 + ascii_code = Hex

and that would turn out to be:

0xF100 + 65 = 0xF141

65 would be the character "A" above. I've been looking for some javascript that would take my character and make a Hex from it... But i haven't really found anything that would do this....

Any help would be great!

Why would you be doing this? 0xF141 is a Private Use code point and should not be used in public information interchange but only by private agreements. There is probably a more reasonable approach to the original problem, whatever it is. — Jukka K. Korpela, Dec 14 '13 at 08:05

score 51 · Accepted Answer · edited Nov 25 '19 at 21:20

51

Number's toString accepts a radix parameter, with which you can convert the ASCII code to hexadecimal like this:

var data = "A";
console.log("0xF1" + data.charCodeAt(0).toString(16));

16 means base 16, which is hexadecimal.

edited Nov 25 '19 at 21:20

Sandra Rossi

11,934
5
22
48

answered Dec 14 '13 at 05:38

thefourtheye

233,700
52
457
497

2

What does the (16) do? – StealthRT Dec 14 '13 at 05:41
3

@StealthRT `16` means base 16, which is hexadecimal. – thefourtheye Dec 14 '13 at 05:41
1

you can also do .toString(36) which is base 36 which includes letters past 9. I think .toString(2) is to binary. – etoxin Aug 20 '14 at 06:54
`.toString(10)` is decimal – swade Jan 28 '16 at 23:36
4

Just to alert you, if your string contains any character codes below 16, an extra step is needed to zero pad. An example if how to do this is `var c = a.charCodeAt(i);var d = "00"+c.toString(16);var e = d.substr(d.length-2);` – John Allsup Aug 23 '16 at 22:19

Javascript character (ASCII) to Hex

1 Answers1

Linked