<swiper
autoplay="{{autoplay}}"
interval="{{interval}}"
duration="{{duration}}"
bindchange="swiperChange"
current="{{current}}">

swiperChange(e){
    let current = e.detail.current;
    let source = e.detail.source
    //console.log(source);
    // 这里的source是判断是否是手指触摸 触发的事件
    if (source === 'touch') {
        this.setData({
          current:current
        })
    }
}