JS Key Event Codes

Javascript assigns a numeric code to every key on a keyboard, including ones that control programs and interfaces.

Press any key to display its code:

Here is a table that contains the values from event.which.

JavaScript Key Event Codes

JavaScript key event codes, also known as key codes or key values, are numeric values assigned to each key on a keyboard. They are used to identify which key has been pressed or released during a keyboard event.

Key event codes are commonly used in web development to add interactivity and user input to web pages. For example, you might use key event codes to create a keyboard shortcut that performs a certain action when the user presses a specific key combination.

Key event codes are represented by numerical values in the range of 0-255, and each value corresponds to a specific key on a keyboard. They can be accessed using the keyCode property of the KeyboardEvent object, which is passed as an argument to a key event listener function.

Here are a few examples of common key event codes:

• 13: "Enter key"
• 32: "Space bar"
• 65: Letter "A"
• 48: Number "0"

By using key event codes in combination with event listeners, you can create powerful keyboard-driven interactions that make your web pages more engaging and user-friendly. For example, the key event captured in webpage uses a variation of the following JavaScript event handler:

document.addEventListener("keydown",
  function(event){
    console.log(event.which);
  })

Knowing the key number or keycode in JavaScript Keyboard Events provides developers with a powerful tool to create responsive and user-friendly web applications.

Related Utilities

• ASCII Table
• Emoji's Table

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