4
100
Number Pad 4
event.keyCode
100
event.key
4
event.code
Numpad4
Unicode
④
Code Examples
Copy and paste these examples to detect the 4 key in your JavaScript code
Recommended modern approach
// Modern approach (recommended)
document.addEventListener('keydown', (e) => {
if (e.key === '4') {
console.log('4 key pressed!');
// Your code here
}
});Related Keys
Other keys commonly used together or in similar contexts