Detect CTRL and SHIFT key without keydown event?

Question

I\'ve been wondering if I can detect CTRL and SHIFT key being pressed WITHOUT using keydown event.

The reason is that I am creating some sort o

Answer 1

You don't need any key events at all to detect Shift, Ctrl and Alt when mouse is clicked^MDN.

The Event object contains this information:

element.addEventListener('click', function (e) {
    console.log(e.shiftKey);
    console.log(e.ctrlKey);
    console.log(e.altKey);
});

A demo at jsFiddle.

These properties can be read also in keyboard event handlers.