微信小程序实现顶部导航切换效果

1.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>
    <!-- 我是嘻嘻 -->
    <swiper-item>
      <view>我是嘻嘻</view>
    </swiper-item>
</swiper>

2.index.wxss

/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;
}

3.index.js

//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
      })
    }
  }
})