微信小程序多列选择器range-key使用详解

<picker mode="multiSelector" bindchange="bindMultiPickerChange2" bindcolumnchange="bindMultiPickerColumnChange2" value="{{multiIndex}}" range="{{objectMultiArray}}" range-key="{{'name'}}"> <view class="picker">  当前选择：{{objectMultiArray[0][multiIndex2[0]].name}}，{{objectMultiArray[1][multiIndex2[1]].name}} </view></picker>

Page({ /** * 页面的初始数据 */ data: { objectMultiArray: [  [  {   id: 0,   name: '无脊柱动物'  },  {   id: 1,   name: '脊柱动物'  }  ], [  {   id: 0,   name: '扁性动物'  },  {   id: 1,   name: '线形动物'  },  {   id: 2,   name: '环节动物'  },  {   id: 3,   name: '软体动物'  },  {   id: 3,   name: '节肢动物'  }  ] ], multiIndex2: [0, 0], }, bindMultiPickerChange2: function (e) { console.log('picker发送选择改变，携带值为', e.detail.value) this.setData({  multiIndex2: e.detail.value }) }, bindMultiPickerColumnChange2: function (e) { console.log('修改的列为', e.detail.column, '，值为', e.detail.value); var data = {  objectMultiArray: this.data.objectMultiArray,  multiIndex2: this.data.multiIndex2 }; data.multiIndex2[e.detail.column] = e.detail.value; switch (e.detail.column) {  case 0:  switch (data.multiIndex2[0]) {   case 0:   data.objectMultiArray[1] = [    { id: 0, name: '扁性动物' },    { id: 1, name: '线形动物' },    { id: 2, name: '环节动物' },    { id: 3, name: '软体动物' },    { id: 3, name: '节肢动物' }   ];   // data.multiArray[2] = ['猪肉绦虫', '吸血虫'];   break;   case 1:   data.objectMultiArray[1] = [    { id: 0, name: '鱼' },    { id: 1, name: '线形两栖动物' },    { id: 2, name: '爬行动物' }   ];   break;  }  data.multiIndex2[1] = 0;  // data.multiIndex[2] = 0;  break; } this.setData(data); }})