var element = document.getElementById('map');
// click shortcut
happen.click(element);
// dblclick shortcut
happen.dblclick(element);
// custom options
happen.dblclick(element, { shift: true });
// any other event type under MouseEvents
happen.once(element, {
    type: 'mousewheel',
    detail: -100
});
// The once api takes
happen.once(
    // element
    element, {
        // event type (e.type)
        type: 'mousewheel',
        // any other options
        detail: -100
    });
// touch events
happen.once(element, {
        type : 'touchstart',
        touches : [{
                pageX : 800,
                pageY : 800
            },
            {
                pageX : 400,
                pageY : 400
            }]
    });

// Shortcut - 'click' is shorthand for { type: 'click' }
$('.foo').happen('click');
// Longhand - specify any sort of properties
$('.foo').happen({ type: 'keyup', keyCode: 50 });
// Works on any jQuery selection
$('.foo, .bar').happen('dblclick');