var xRoll2 = new BScroll(commodityRoll, {

scrollX: true,scrollY: false,bounce: {    left: false,    right: false},stopPropagation: true,//用法在于這一行probeType: 2

});
xRoll2.on('scroll', function (e) {//之后被冒泡頁，通過事件監(jiān)聽去出發(fā)控制

if (Math.abs(e.x) <= 0) {
    xRoll.scrollTo(-window.outerWidth * 5, 0, 700)
}

});