EventListening.js

function setup() {
    var canvas = document.getElementById('my_canvas');
    canvas.addEventListener('mousemove', onMouseMove);
    canvas.addEventListener('keydown', onKeyDown);
}

function onMouseMove(event) {
    var posX = event.clientX;
    var posY = event.clientY;
    return posX;
}

function onKeyDown(event) {
    var keyID = event.keyID;
    return keyID;
}