Page({
 data: {
  imgUrls: ['http://img02.tooopen.com/images/20150928/tooopen_sy_143912755726.jpg',
'http://img06.tooopen.com/images/20160818/tooopen_sy_175866434296.jpg',
'http://img06.tooopen.com/images/20160818/tooopen_sy_175833047715.jpg'
  ],
  indicatorDots: false,
  autoplay: false,
  interval: 5000,
  duration: 1000
 },
 changeIndicatorDots: function (e) {
  this.setData({
   indicatorDots: !this.data.indicatorDots
  })
 },
 changeAutoplay: function (e) {
  this.setData({
   autoplay: !this.data.autoplay
  })
 },
 intervalChange: function (e) {
  this.setData({
   interval: e.detail.value
  })
 },
 durationChange: function (e) {
  this.setData({
   duration: e.detail.value
  })
 }
})

<swiper indicator-dots="{{indicatorDots}}"
autoplay="{{autoplay}}" interval="{{interval}}" duration="{{duration}}">
  <block wx:for="{{imgUrls}}" wx:key="{{index}}">
    <swiper-item>
      <image src="{{item}}" class="slide-image" width="355" height="150" ></image>
      <text class="textindex">{{index}}</text>
    </swiper-item>
  </block>  
</swiper>
<button bindtap="changeIndicatorDots"> indicator-dots ({{indicatorDots}})</button>
<button bindtap="changeAutoplay"> autoplay ({{autoplay}})</button>
<slider bindchange="intervalChange" show-value min="2000" max="5000"/> interval
<slider bindchange="durationChange" show-value min="1000" max="2000"/> duration

.slide-image{  
  display: inline;
}
.textindex{
  position: absolute;
  top :20px;
  color: red;
}