Knockout + Hammer JS Binding

ko-hammer.js

( function( window, ko ) {

    var touchEvents = [ 'tap', 'doubletap', 'hold', 'rotate',
        'drag', 'dragdown', 'dragup', 'dragleft', 'dragright',
        'transform', 'transformstart',
        'transformend', 'swipe', 'swipeleft', 'swiperight',
        'swipeup', 'swipedown', 'pinch', 'pinchin', 'pinchout'
    ];

    var makeMobileBindings = function( touchEventName ) {
        ko.bindingHandlers[ touchEventName ] = {
            init: function( element, valueAccessor, allBindingsAccessor, viewModel, bindingContext ) {
                var handler = valueAccessor(),
                    allBindings = allBindingsAccessor();
                Hammer( element ).on( touchEventName, function( e ) {
                    handler( viewModel, e );
                } );
            }
        };
    };

    ( function() {
        for ( i in touchEvents ) {
            var eventName = touchEvents[ i ];
            makeMobileBindings( eventName );
        }
    } )();

}( this, ko ) );