What are the Javascript Keycodes for the letter 'a' - is it 65 or

Question

What are the Javascript Keycodes for the letter 'a' - is it 65 or

I am currently working with JavaScript on my MacBook Pro running OSX 10.11.x, using the Chrome browser. The function I am using is:

window.onkeypress = function(e) {
    var key = e.keyCode ? e.keyCode : e.which;
    console.log("keypressed = " + key);
}

When I press the 'a' key on my keyboard, it logs as 97, which is different from the widely accepted keyCode of 65 found on the internet.

This discrepancy extends to other keys as well. For example, 's' logs as 115 for me, while it is commonly known to have a keyCode of 83.

Could there be a missing dependency causing this inconsistency? If I assume that a == 95 and fire an event, will it work on other browsers as well?

Thank you.

javascript keycode

Answer 1

Answer №1

After conducting research, I have determined that the ASCII value for a capital A is 65.

Similarly, the ASCII value for a lowercase a is 97.

Take a look at this informative chart:

https://i.sstatic.net/voeVM.gif

To access the original chart, please visit:

Answer 2

After conducting research, I have determined that the ASCII value for a capital A is 65.

Similarly, the ASCII value for a lowercase a is 97.

Take a look at this informative chart:

https://i.sstatic.net/voeVM.gif

To access the original chart, please visit:

Answer 3

Answer №2

Uppercase letters are distinct from lowercase letters and generate different codes.

Moreover, the keypress event behaves in a unique way compared to the keyup or keydown events. The keypress event responds to printable characters and provides the code of the character that was produced. In contrast, with keyup and keydown, the code corresponds to the physical hardware key on the keyboard that was pressed. For instance, if you execute the code snippet below and solely press the SHIFT key, you will not observe the keypress event log message because that event does not trigger for that particular key.

window.addEventListener("keyup", function(e) {
    var key = e.keyCode ? e.keyCode : e.which;
    console.log("key up = " + key, e.key);
});

window.addEventListener("keydown", function(e) {
    var key = e.keyCode ? e.keyCode : e.which;
    console.log("key down = " + key, e.key);
});

window.addEventListener("keypress", function(e) {
    var key = e.keyCode ? e.keyCode : e.which;
    console.log("key pressed = " + key, e.key);
});

Simply click on this area to give it focus, then press some keys.

Answer 4

Uppercase letters are distinct from lowercase letters and generate different codes.

Moreover, the keypress event behaves in a unique way compared to the keyup or keydown events. The keypress event responds to printable characters and provides the code of the character that was produced. In contrast, with keyup and keydown, the code corresponds to the physical hardware key on the keyboard that was pressed. For instance, if you execute the code snippet below and solely press the SHIFT key, you will not observe the keypress event log message because that event does not trigger for that particular key.

window.addEventListener("keyup", function(e) {
    var key = e.keyCode ? e.keyCode : e.which;
    console.log("key up = " + key, e.key);
});

window.addEventListener("keydown", function(e) {
    var key = e.keyCode ? e.keyCode : e.which;
    console.log("key down = " + key, e.key);
});

window.addEventListener("keypress", function(e) {
    var key = e.keyCode ? e.keyCode : e.which;
    console.log("key pressed = " + key, e.key);
});

Simply click on this area to give it focus, then press some keys.

What are the Javascript Keycodes for the letter 'a' - is it 65 or

Answer №1

Answer №2

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