November 2011
Listen for Key Presses on a Web Page
This sample uses the .which
, property, which is deprecated. See https://developer.mozilla.org/en-US/docs/Web/API/UIEvent/which
Keycode:
Source
function checkKeyCode(e) {
if (e) {
return e.which;
}
return ' ';
}
document.addEventListener('DOMContentLoaded', function () {
document.addEventListener('keydown', function (evt) {
document.querySelector('h1 span#keycode').textContent = checkKeyCode(evt);
});
});