微信小程序中頂部導航欄的實現

實例代碼：

<view class="swiper-tab">    <view class="swiper-tab-list {{currentTab==0 ? 'on' : ''}}" data-current="0" bindtap="swichNav">11</view>    <view class="swiper-tab-list {{currentTab==1 ? 'on' : ''}}" data-current="1" bindtap="swichNav">22</view>    <view class="swiper-tab-list {{currentTab==2 ? 'on' : ''}}" data-current="2" bindtap="swichNav">33</view>   <view class="swiper-tab-list {{currentTab==3 ? 'on' : ''}}" data-current="3" bindtap="swichNav">44</view>   <view class="swiper-tab-list {{currentTab==4 ? 'on' : ''}}" data-current="4" bindtap="swichNav">55</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-item>     <view>我是嘿嘿</view>    </swiper-item>    <swiper-item>     <view>我是嘿嘿</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;  }  

var app = getApp()  Page( {   data: {    /**     * 頁面配置     */    winWidth: 0,    winHeight: 0,    // tab切換    currentTab: 0,   },   onLoad: function() {    var that = this;      /**    * 獲取系統信息    */    wx.getSystemInfo( {       success: function( res ) {      that.setData( {       winWidth: res.windowWidth,       winHeight: res.windowHeight      });     }      });   },   /**    * 滑動切換tab    */   bindChange: function( e ) {      var that = this;    that.setData( { currentTab: e.detail.current });     },   /**   * 點擊tab切換   */   swichNav: function( e ) {      var that = this;      if( this.data.currentTab === e.target.dataset.current ) {     return false;    } else {     that.setData( {      currentTab: e.target.dataset.current     })    }    },  /**  * 點擊分享  */  onShareAppMessage: function () {   return {    title: '裝逼小程序',    path: '/page/user?id=123'   }  } })  

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