小程序Tap切换

<!-- Tap切换 -->
  <view class="nav_title">
    <view class="nav_tab">
      <view wx:for="{{list}}" class="{{selected==index?'hidden':'show'}}" wx:key="this" data-index='{{index}}' bindtap="selected">
        {{item}}
        <view class="{{selected==index?'nav_underline':''}}"></view>
      </view>
    </view>

    <!-- tab框显示内容 -->
    <view wx:if="{{selected == 0}}">aaa</view>
    <view wx:if="{{selected == 1}}">bbb</view>
    <view wx:if="{{selected == 2}}">ccc</view>
    <view wx:if="{{selected == 3}}">ddd</view>
  </view>

Page({

  /**
   * 页面的初始数据
   */
  data: {
    selected: 0,
    list: ['上衣', '裤子', '套装', '女鞋'],
    
  },
  

 
  selected: function (e) {
    console.log(e)
    let that = this
    let index = e.currentTarget.dataset.index
    console.log(index)
    if (index == 0) {
      that.setData({
        selected: 0
      })
    } else if (index == 1) {
      that.setData({
        selected: 1
      })
    } else if (index == 2) {
      that.setData({
        selected: 2
      })
    } else {
      that.setData({
        selected: 3
      })
    }
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
  
  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function () {

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {

  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function () {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {

  },
  //向下滑动
  onPageScroll: function () {

  },
  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {

  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {

  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function () {

  }
})