微信小程序实现选项卡滑动切换

<!--index.wxml--> 
<view class="swiper-tab"> 
 <view class="swiper-tab-list {{currentTab==0 ? 'on' : ''}}" data-current="0" bindtap="swichNav">哈哈</view> 
 <view class="swiper-tab-list {{currentTab==1 ? 'on' : ''}}" data-current="1" bindtap="swichNav">呵呵</view> 
 <view class="swiper-tab-list {{currentTab==2 ? 'on' : ''}}" data-current="2" bindtap="swichNav">嘿嘿</view> 
</view> 
 
<swiper current="{{currentTab}}" class="swiper-box" duration="300" style="height:{{winHeight - 31}}px" bindchange="bindChange"> 
 <!-- 我是哈哈 --> 
 <swiper-item> 
  <view>我是哈哈</view> 
 </swiper-item> 
 <!-- 我是呵呵 --> 
 <swiper-item> 
  <view>我是呵呵</view> 
 </swiper-item> 
 <!-- 我是嘿嘿 --> 
 <swiper-item> 
  <view>我是嘿嘿</view> 
 </swiper-item> 
</swiper> 

/**index.wxss**/ 
.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: 33.33%; 
 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 
  }) 
 } 
 } 
})