微信小程序下拉日期

            <picker mode="date" header-text="选择时间" fields="year" :value="date"           bindchange="bindDateChange" wx:if="{{isShow}}">
          <view>
            <text>选择年:</text>
            <text>{{year}}</text>
            <image src="/image/switch.png"></image>
          </view>
        </picker>

          bindDateChange(e){
      this.setData({
        year:e.detail.value
      })
      var year=this.data.year
      console.log('切换years',year);
      // 当年份切换重新获取接口
      if(e.detail.value){
        this.projectAnalysis(year,'','','year')
      }
      },

      getTime: function () {
        let date = new Date();
        let year = date.getFullYear()
        let mouth = date.getMonth() + 1
        let day = date.getDate()
        this.setData({
          date: year + '年' + mouth + '月' + day + '日',
          year: year,
        })
      }

      /**
       * 生命周期函数--监听页面加载
       */
      onLoad: function (options) {
        this.getTime()
      },