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KeyCode value shown here
                                                                                                                                                                                                          
Alphanumeric key code values(keyCode)
                                 button                                                               Key code                                                               button                                                               Key code                                                               button                                                               Key code                                                               button                                                               Key code                             
A 65 J 74 S 83 1 49
B 66 K 75 T 84 2 50
C 67 L 76 U 85 3 51
D 68 M 77 V 86 4 52
E 69 N 78 W 87 5 53
F 70 O 79 X 88 6 54
G 71 P 80 Y 89 7 55
H 72 Q 81 Z 90 8 56
I 73 R 82 0 48 9 57
                                                                                                                                                                                                          
Key code values for keys on the numeric keypad(keyCode) Function key key code value(keyCode)
                                 button                                                               Key code                                                               button                                                               Key code                                                               button                                                               Key code                                                               button                                                               Key code                             
0 96 8 104 F1 112 F7 118
1 97 9 105 F2 113 F8 119
2 98 * 106 F3 114 F9 120
3 99 + 107 F4 115 F10 121
4 100 Enter 108 F5 116 F11 122
5 101 - 109 F6 117 F12 123
6 102 . 110
7 103 / 111
                                                                                                                                                                                                          
Control key code value(keyCode)
                                 button                                                               Key code                                                               button                                                               Key code                                                               button                                                               Key code                                                               button                                                               Key code                             
BackSpace 8 Esc 27 Right Arrow 39 -_ 189
Tab 9 Spacebar 32 Dw Arrow 40 .> 190
Clear 12 Page Up 33 Insert 45 /? 191
Enter 13 Page Down 34 Delete 46 `~ 192
Shift 16 End 35 Num Lock 144 [{ 219
Control 17 Home 36 ;: 186 /| 220
Alt 18 Left Arrow 37 =+ 187 ]} 221
Cape Lock 20 Up Arrow 38 ,< 188 '" 222
                                                                                                                                                                                                          
Multimedia key code value(keyCode)
                                 button                                                               Key code                                                               button                                                               Key code                                                               button                                                               Key code                                                               button                                                               Key code                             
Volume up 175
Volume down 174
stop 179
Mute 173
Browser 172
mail 180
search for 170
Favorite 171

Keyboard Key Value KeyCode Online Get Tool

1,Detailed keyboard key code KeyCode comparison table, Keycode represents the key code constant

If the key is a letter, the Keycode value = the Ascii value of the character's uppercase character

For other characters, the Keycode value is the same as the Ascii value of the key's lower file characters
2,Quickly get the KeyCode and KeyAscii codes of each keyboard key value online, so that you can easily master the development
Get KeyCode Key Code

The keyCode (or key code) refers to the numerical code assigned to a particular key on a keyboard. It is used in JavaScript to detect which key was pressed in response to a keyboard event (like keydown, keypress, or keyup).

How to Get the KeyCode in JavaScript
JavaScript provides a KeyboardEvent object that contains the keyCode property, which can be used to identify the key pressed by the user.

Here is a basic example:

JavaScript Example to Get KeyCode:
html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Get KeyCode</title>
</head>
<body>
<h1>Press any key to get its KeyCode</h1>
<div id="output"></div>

<script>
// Add an event listener for the keydown event
document.addEventListener('keydown', function(event) {
// Get the keyCode from the event object
let keyCode = event.keyCode;
let keyName = event.key; // Get the name of the key pressed (e.g., "a", "Enter")

// Display the keyCode and key name in the output div
document.getElementById("output").innerHTML = `Key: ${keyName}, KeyCode: ${keyCode}`;
});
</script>
</body>
</html>
Explanation of the Code:
Event Listener: An event listener is added to the document to listen for the keydown event.
event.keyCode: This property returns the numeric key code of the key pressed. For example, when the "Enter" key is pressed, event.keyCode would be 13.
event.key: This property returns the name of the key pressed as a string (e.g., 'a', 'Enter').
Example Key Codes:
Here are some common key codes for different keys:

Key Name KeyCode
Enter 13
Space 32
ArrowUp 38
ArrowDown 40
ArrowLeft 37
ArrowRight 39
Backspace 8
Tab 9
Shift 16
Control 17
Alt 18
Escape 27
Delete 46
A 65
Z 90
1 49
Notes on KeyCode:
keyCode is deprecated: In modern web development, it's recommended to use the key property, which provides more descriptive values (like 'a', 'Enter').
keyCode for non-printable keys: For example, special keys like Enter, Backspace, Arrow keys, etc., are also represented by specific key codes.
Example Using event.key Instead of keyCode:
javascript

document.addEventListener('keydown', function(event) {
let keyName = event.key; // This will give the name of the key, like 'Enter', 'a', etc.
document.getElementById("output").innerHTML = `Key: ${keyName}`;
});
This is a better approach for most modern web applications since key is easier to read and provides a more consistent result across browsers and devices.

Conclusion:
keyCode can be used to get the key code of the key that is pressed during a keyboard event.
event.key is the recommended modern approach to get the key name, which is more intuitive.
You can use JavaScript event listeners to capture keypress events and extract the key codes or key names for your use case.

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