//js data:{   multiIndex: 0,         multiArray: [],         yuanxiku: [],         wenti:[] }, // 多项选择器点击确定事件     bindMultiPickerChange: function (e) {         console.log('picker发送选择改变，携带值为', e.detail.value)         if (e.detail.value.length == 0) {             return         }         else{             this.setData({                 multiIndex: e.detail.value,                 wenti:this.data.multiArray             })         }     },     // 多项选择器滑动事件     bindMultiPickerColumnChange: function (e) {         console.log('column', e.detail.column)         console.log('value', e.detail.value)         let data = {             multiArray: this.data.multiArray,         };         if (e.detail.column == 0) {             console.log('滑动')             data.multiArray[1] = this.data.yuanxiku[e.detail.value];         }         this.setData(data);     }, //wxml  <picker class="xuexiaoxuanze" mode="multiSelector" bindchange="bindMultiPickerChange" bindcolumnchange="bindMultiPickerColumnChange" value="{{multiIndex}}" range="{{multiArray}}" bindcancel="quxiao">         <view class="picker" wx:if="{{multiIndex}}">             {{multiArray[0][multiIndex[0]]}}，{{multiArray[1][multiIndex[1]]}}         </view>         <view wx:if="{{!multiIndex}}" class="tishi">请选择院系与专业</view>     </picker> [图片][图片][图片][图片]