Zepto's touch.js but working with jQuery and also removing the 300ms delay

touch.js

// ************************************************************************
// You shouldn't use this anymore.
// http://updates.html5rocks.com/2013/12/300ms-tap-delay-gone-away
// 
// Basically, disable double tap to zoom in on sites on a mobile device.
// <meta name="viewport" content="width=device-width">
// 
// If you want to also disable pinch-zooming
// <meta name="viewport" content="width=device-width, user-scalable=no">
// 
// Done!
// ************************************************************************

// If you really want to see the old code, its below.

// Adding a modified version of touch.js as a plug-in from Zepto into jQuery
// This will remove the 300ms delay before firing a click event... got rid of double tap support (Who uses that?)
// Also still has support for longpress.
// https://github.com/madrobby/zepto/blob/master/src/touch.js#files
(function($){
    var touch = {}, longTapTimeout, longTapDelay = 750;

    function parentIfText(node) {
        return node.hasOwnProperty('tagName') ? node : node.parentNode;
    }

    function longTap() {
        longTapTimeout = null;
        if (touch.last) {
            $(touch.target).trigger('longtap');
            touch = {};
        }
    }

    function cancelLongTap() {
        if (longTapTimeout) {
            clearTimeout(longTapTimeout);
        }
        longTapTimeout = null;
    }

    function cancelAll() {
        if (longTapTimeout) {
            clearTimeout(longTapTimeout);
        }
        longTapTimeout = null;
        touch = {};
    }

    $(document).ready(function () {
        $(document.body).bind('touchstart', function (e) {
            touch = {};
            var now = Date.now();
            touch.target = parentIfText(e.originalEvent.touches[0].target);
            touch.x1 = e.originalEvent.touches[0].pageX;
            touch.y1 = e.originalEvent.touches[0].pageY;
            touch.last = now;
            longTapTimeout = setTimeout(longTap, longTapDelay);
        }).bind('touchmove', function (e) {
            cancelLongTap();
            touch.x2 = e.originalEvent.touches[0].pageX;
            touch.y2 = e.originalEvent.touches[0].pageY;
        }).bind('touchend', function (e) {
            cancelLongTap();
            if ((touch.x2 > 0 || touch.y2 > 0) &&
                    (Math.abs(touch.x1 - touch.x2) > 30 || Math.abs(touch.y1 - touch.y2) > 30)) {
                // Swipe Event
                touch = {};
            } else if (touch.hasOwnProperty('last')) {
                // Tap Event
                $(touch.target).trigger('tap');
            }
            touch = {};
        }).bind('touchcancel', cancelAll).bind('click', function (e) {
            // e.stopPropagation();
        });

        ['tap', 'longtap'].forEach(function (m) {
            $.fn[m] = function (callback) {
                return this.bind(m, callback);
            };
        });
    });
})(jQuery);