微信小程序 swiper制作tab切换实现

<view class="swiper-tab">
 <view class="swiper-tab-list {{currentTab==0 ? 'on' : ''}}" data-current="0" bindtap="swichNav">Seside1</view>
 <view class="swiper-tab-list {{currentTab==1 ? 'on' : ''}}" data-current="1" bindtap="swichNav">Seside2</view>
 <view class="swiper-tab-list {{currentTab==2 ? 'on' : ''}}" data-current="2" bindtap="swichNav">Seside3</view>
</view>
<swiper current="{{currentTab}}" class="swiper-box" duration="300" style="height:{{winHeight - 31}}px" bindchange="bindChange">
 <swiper-item>
  <view>Seside1</view>
 </swiper-item>
 <swiper-item>
  <view>Seside2</view>
 </swiper-item>
 <swiper-item>
  <view>Seside3</view>
 </swiper-item>
</swiper>

.swiper-tab{
  width: 100%; 
  border-bottom: 2rpx solid #777777; 
  text-align: center; 
  line-height: 80rpx;
}
.swiper-tab-list{
  font-size: 30rpx; 
  display: inline-block; 
  width: 20%; 
  color: #777777; 
}
.on{
  color: #da7c0c; 
  border-bottom: 5rpx solid #da7c0c;
}
.swiper-box{ 
  display: block;
  height: 100%;
  width: 100%;
  overflow: hidden;
 }
.swiper-box view{ 
  text-align: center; 
}

//index.js 
//获取应用实例 
var app = getApp() 
Page( { 
 data: { 
  // 页面配置  
  winWidth: 0, 
  winHeight: 0, 
  // tab切换 
  currentTab: 0, 
 }, 
 onLoad: function() { 
  var that = this; 
  // 获取系统信息 
  wx.getSystemInfo( { 
   success: function( res ) { 
    that.setData( { 
     winWidth: res.windowWidth, 
     winHeight: res.windowHeight 
    }); 
   } 
  }); 
 }, 
 // 滑动切换tab 
 bindChange: function( e ) { 
  var that = this; 
  that.setData( { currentTab: e.detail.current }); 
 }, 
 // 点击tab切换 
 swichNav: function( e ) { 
  var that = this; 
  if( this.data.currentTab === e.target.dataset.current ) { 
   return false; 
  }else{ 
   that.setData( { 
    currentTab: e.target.dataset.current 
   }) 
  } 
 } 
})