js绑定touch事件

定义：

    var touchEvents = {
        touchstart: "touchstart",
        touchmove: "touchmove",
        touchend: "touchend",
        /**
         * @desc:判断是否pc设备，若是pc，需要更改touch事件为鼠标事件，否则默认触摸事件
         */
        initTouchEvents: function () {
            if (isPC()) {
                this.touchstart = "mousedown";
                this.touchmove = "mousemove";
                this.touchend = "mouseup";
            }
        }
    };

调用：

$(".category-item").bind(touchEvents.touchstart, function (event) {
code;
});