微信小程序获取省市县

<picker bindchange="bindRegionChange" mode = "region">
    <view class="picker">省市区：{{region[0]}}，{{region[1]}}，{{region[2]}}</view>
  </picker>
</view>

bindRegionChange(e) {
    console.log('picker发送选择改变，携带值为', e.detail.value)
    this.setData({
      region: e.detail.value,
      shen: e.detail.value[0],
      shi: e.detail.value[1],
      qu: e.detail.value[2],
    })
  }