(function(){

    var TOUCHSTART, TOUCHEND;

    if (typeof(window.ontouchstart) != 'undefined') {

        TOUCHSTART = 'touchstart';

        TOUCHEND = 'touchend';

        TOUCHMOVE='touchmove';

    } else if (typeof(window.onmspointerdown) != 'undefined') {

        TOUCHSTART = 'MSPointerDown';

        TOUCHEND = 'MSPointerUp';

        TOUCHMOVE='MSPointerMove';

    } else {

        TOUCHSTART = 'mousedown';

        TOUCHEND = 'mouseup';

        TOUCHMOVE = 'mousemove';

    }

    function tap(node,callback,scope) {

        var x,y,startTime=0,endTime=0,in_dis=false,bMoved=false;

        node.addEventListener('touchstart', function(e) {

            x = e.touches[0].pageX;

            y = e.touches[0].pageY;

            startTime= +new Date();

        });

        //完全不滑动

        // node.addEventListener('touchmove',function(e){

        //     bMoved = true;

        // });

        node.addEventListener('touchend', function(e) {

            e.stopPropagation();

            e.preventDefault();

            var bDisabled = hasClass(node,'disable') || hasClass(node,'disabled') || node.disabled;

            if(!bDisabled){

                var curx = e.changedTouches[0].pageX;

                var cury = e.changedTouches[0].pageY;

                //轻微滑动

                if (Math.abs(curx - x) < 6 && Math.abs(cury - y) < 6) {

                    in_dis=true;

                }else{

                    in_dis=false;

                }

                //or 完全不滑动

                //in_dis = !bMoved;

                endTime= +new Date();

                if (endTime - startTime < 150 && in_dis) {

                    callback.apply(scope, arguments);

                }

            }

            /*充值参数*/

            startTime = 0;

            in_dis = false;

            //bMoved = false;

        });

    }

    function longTap(node,callback,scope) {

        var x,y,startTime=0,endTime=0,in_dis=false;

        node.addEventListener(TOUCHSTART, function(e) {

            x = e.touches[0].pageX;

            y = e.touches[0].pageY;

            startTime = +new Date();

        });

        node.addEventListener(TOUCHEND, function(e) {

            e.stopPropagation();

            e.preventDefault();

            var bDisabled = hasClass(node,'disable') || hasClass(node,'disabled') || node.disabled;

            if(!bDisabled){

                var curx = e.changedTouches[0].pageX;

                var cury = e.changedTouches[0].pageY;

                if (Math.abs(curx - x) < 6 && Math.abs(cury - y) < 6) {

                    in_dis=true;

                }else{

                    in_dis=false;

                }

                endTime = +new Date();

                if (endTime - startTime > 300 && in_dis) {

                    callback.apply(scope, arguments);

                }

            }

            /*重置参数*/

            startTime = 0;

            in_dis = false;

        });

    }

    function hasClass(el, cls) {

        if (!el || !cls) return false;

        if (cls.indexOf(' ') != -1) throw new Error('className should not contain space.');

        if (el.classList) {

            return el.classList.contains(cls);

        } else {

            return (' ' + el.className + ' ').indexOf(' ' + cls + ' ') > -1;

        }

    }

    window.touch = {

        tap: tap,

        longTap: longTap

    }

});