Convert from characters to KeyCode

Question

I everyone, I must convert a character to keyCode... I must not convert to charCode...

For example if I have a "." (a dot) I need to obtain "190" as result.. but If I do

".".charCodeAt(0)

I obtain "46"... "46" is not the result I want... I have also tried to do

String.fromCharCode(190);

In this case I do not obtain "." but I obtain "3/4".

How can I convert the character to obtain "190"?

UPDATE I must compare the input from the keyboard with a value in a "string"... I need to do something like this

window.addEventListener('keydown', function(e){
    if(e.keyCode == ".") <-- I need to get the keyCode of the "."
    {
        //Do something
    }
});

That is an example.... I do not know which is the char I could need to compare... It could be a ".", or a ",", o something else...

Thank you all.

I updated my question... however if I press the "." on the keyboard I can see the "." has the code 190... see the answer of @Torean — Simone, May 05 '15 at 09:58

TrojanMorse · Answer 1 · 2015-05-11T17:42:28.457

0

I was thinking and you reminded me of something simelar I needed to do. what you can do is maybe use a eventListener and log the code to the console. for example:

window.addEventListener('keydown', function(e){
    console.log(e.keyCode);
});

This will just log out the keycode of every pressed key on the keyboard

here is the link to the JS fiddle: https://jsfiddle.net/ToreanJoel/09798khL/

edited May 11 '15 at 17:42

answered May 05 '15 at 09:41

TrojanMorse

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the character I need to get te code does not come from keyboard :( – Simone May 05 '15 at 09:54
1

What input device are you using? – TrojanMorse May 05 '15 at 09:54

score 0 · Answer 2 · answered Apr 18 '18 at 10:36

While I do not have a solution for converting special characters to keyCodes (also see my answer here: https://stackoverflow.com/a/49897083/9219743 ), here another solution for your problem - just use:

if(e.key == '.') {//do something}

So compare to e.key (which is the actual character) instead of e.keyCode.

Convert from characters to KeyCode

2 Answers2