初学云开发，在Index界面，编辑一个按钮，代码如下 <!--index.wxml--> <button type="primary" bindtap="getData">提取数据</button> [图片] // index.js // const app = getApp() const db=wx.cloud.database() Page({   data: {        }, getData(){    }, 编译后没有报错，但是模拟器中也是一张白板，求解决办法。我用测试号编写的时候，模拟器功能是没问题的。 [图片]

WXML中很简单 <view class="COptAdv_row" wx:for="{{COptAdv_List}}">   <view class="COptAdv_Item1">{{item.Adv_Item1}}</view>   <view class="COptAdv_Dia1">{{item.Adv_Dia_Para1}}</view>   <view class="COptAdv_Item2">{{item.Adv_Item2}}</view>   <view class="COptAdv_Dia2">{{item.Adv_Dia_Para2}}</view> </view> JS中数据定义如下： data: {     COptAdv_List:[       {Adv_Item1:"XM1:", Adv_Dia_Para1:0, Adv_Item2:"XBR1:", Adv_Dia_Para2:0},       {Adv_Item1:"XM2:", Adv_Dia_Para1:0, Adv_Item2:"XBR2:", Adv_Dia_Para2:0},       {Adv_Item1:"XM3:", Adv_Dia_Para1:0, Adv_Item2:"XBR3:", Adv_Dia_Para2:0},       {Adv_Item1:"XM4:", Adv_Dia_Para1:0, Adv_Item2:"XBR4:", Adv_Dia_Para2:0},       {Adv_Item1:"XM5:", Adv_Dia_Para1:0, Adv_Item2:"XBR5:", Adv_Dia_Para2:0},       {Adv_Item1:"XM6:", Adv_Dia_Para1:0, Adv_Item2:"XBR6:", Adv_Dia_Para2:0}     ],     XM_P:0,     XBR_P:0,   }, Onload里对其进行判断和赋值，程序写得冗长，的确没找到更好的判断方式 onLoad: function (options) {     var i = 0     var length = this.data.COptAdv_List.length     for (let i = 0; i < length; i++) {       console.log(app.Input_Current1)       this.setData({         XM_P:app.Input_Current1[i]/app.Input_Parameter.Temp_Para/app.Input_Parameter.Density_Para,         XBR_P:app.Input_Current1[i+6]/app.Input_Parameter.Temp_Para/app.Input_Parameter.Density_Para,       })       console.log(i)       console.log(this.data.XM_P)       console.log(this.data.XBR_P)       // 动力线选线径       if (this.data.XM_P>=0 && this.data.XM_P<=6) {         this.setData({           [`COptAdv_List[${i}].Adv_Dia_Para1`]:0.25,         })       }       if (this.data.XM_P>6 && this.data.XM_P<=7) {         this.setData({           [`COptAdv_List[${i}].Adv_Dia_Para1`]:0.35,         })       }       if (this.data.XM_P>7 && this.data.XM_P<=9) {         this.setData({           [`COptAdv_List[${i}].Adv_Dia_Para1`]:0.5,         })       }       if (this.data.XM_P>9 && this.data.XM_P<=12) {         this.setData({           [`COptAdv_List[${i}].Adv_Dia_Para1`]:0.75,         })       }       if (this.data.XM_P>12 && this.data.XM_P<=15) {         this.setData({           [`COptAdv_List[${i}].Adv_Dia_Para1`]:1.0,         })       }       if (this.data.XM_P>15 && this.data.XM_P<=18) {         this.setData({           [`COptAdv_List[${i}].Adv_Dia_Para1`]:1.5,         })       }       if (this.data.XM_P>18 && this.data.XM_P<=26) {         this.setData({           [`COptAdv_List[${i}].Adv_Dia_Para1`]:2.5,         })       }       if (this.data.XM_P>26 && this.data.XM_P<=34) {         this.setData({           [`COptAdv_List[${i}].Adv_Dia_Para1`]:4.0,         })       }       if (this.data.XM_P>34 && this.data.XM_P<=44) {         this.setData({           [`COptAdv_List[${i}].Adv_Dia_Para1`]:6.0,         })       }       if (this.data.XM_P>44 && this.data.XM_P<=61) {         this.setData({           [`COptAdv_List[${i}].Adv_Dia_Para1`]:10.0,         })       }       if (this.data.XM_P>61 && this.data.XM_P<=82) {         this.setData({           [`COptAdv_List[${i}].Adv_Dia_Para1`]:16.0,         })       }       if (this.data.XM_P>82 && this.data.XM_P<=108) {         this.setData({           [`COptAdv_List[${i}].Adv_Dia_Para1`]:25.0,         })       }       if (this.data.XM_P>108 && this.data.XM_P<=135) {         this.setData({           [`COptAdv_List[${i}].Adv_Dia_Para1`]:35.0,         })       }     }     // 抱闸线选线径     if (this.data.XBR_P>=0 && this.data.XBR_P<=6) {       this.setData({         [`COptAdv_List[${i}].Adv_Dia_Para2`]:0.25,       })     }     if (this.data.XBR_P>6 && this.data.XBR_P<=7) {       this.setData({         [`COptAdv_List[${i}].Adv_Dia_Para2`]:0.35,       })     }     if (this.data.XBR_P>7 && this.data.XBR_P<=9) {       this.setData({         [`COptAdv_List[${i}].Adv_Dia_Para2`]:0.5,       })     }     if (this.data.XBR_P>9 && this.data.XBR_P<=12) {       this.setData({         [`COptAdv_List[${i}].Adv_Dia_Para2`]:0.75,       })     }     if (this.data.XBR_P>12 && this.data.XBR_P<=15) {       this.setData({         [`COptAdv_List[${i}].Adv_Dia_Para2`]:1.0,       })     }     if (this.data.XBR_P>15 && this.data.XBR_P<=18) {       this.setData({         [`COptAdv_List[${i}].Adv_Dia_Para2`]:1.5,       })     }     if (this.data.XBR_P>18 && this.data.XBR_P<=26) {       this.setData({         [`COptAdv_List[${i}].Adv_Dia_Para2`]:2.5,       })     }     if (this.data.XBR_P>26 && this.data.XBR_P<=34) {       this.setData({         [`COptAdv_List[${i}].Adv_Dia_Para2`]:4.0,       })     }     if (this.data.XBR_P>34 && this.data.XBR_P<=44) {       this.setData({         [`COptAdv_List[${i}].Adv_Dia_Para2`]:6.0,       })     }     if (this.data.XBR_P>44 && this.data.XBR_P<=61) {       this.setData({         [`COptAdv_List[${i}].Adv_Dia_Para2`]:10.0,       })     }     if (this.data.XBR_P>61 && this.data.XBR_P<=82) {       this.setData({         [`COptAdv_List[${i}].Adv_Dia_Para2`]:16.0,       })     }     if (this.data.XBR_P>82 && this.data.XBR_P<=108) {       this.setData({         [`COptAdv_List[${i}].Adv_Dia_Para2`]:25.0,       })     }     if (this.data.XBR_P>108 && this.data.XBR_P<=135) {       this.setData({         [`COptAdv_List[${i}].Adv_Dia_Para2`]:35.0,       })     }   }, 监控控制台，从数据提取到数据计算都没有问题 [图片] 但是if判断的时候就有问题了，数组中第2列比较和赋值都正常；第4列中，1个正常，5个不正常，求大神指点这种情况怎么处理？ [图片]

WXML文件是这样的 <view class="XXX" wx:for="{{YY}}">   <view class="xx1">{{item.Y1}}</view>   <view class="xx2">{{item.Y2}}</view>   <view class="xx3">{{item.Y3}}</view>   <icon class="xx4" wx:if="{{item.Y4}}" type="success" size="23"></icon>   <icon class="xx4" wx:else type="warn" size="23"></icon> </view> JS文件里这样写的 data: {     name_Items:['XM1','XM2','XM3','XM4','XM5','XM6','XBR1','XBR2','XBR3','XBR4','XBR5','XBR6'],     YY:[       {Y1:'', Y2:0, Y3:0, Y4:false},       {Y1:'', Y2:0, Y3:0, Y4:false},       {Y1:'', Y2:0, Y3:0, Y4:false},       {Y1:'', Y2:0, Y3:0, Y4:false},       {Y1:'', Y2:0, Y3:0, Y4:false},       {Y1:'', Y2:0, Y3:0, Y4:false},       {Y1:'', Y2:0, Y3:0, Y4:false},       {Y1:'', Y2:0, Y3:0, Y4:false},       {Y1:'', Y2:0, Y3:0, Y4:false},       {Y1:'', Y2:0, Y3:0, Y4:false},       {Y1:'', Y2:0, Y3:0, Y4:false},       {Y1:'', Y2:0, Y3:0, Y4:false}     ],   }, 赋值语句是这么写的（注释中的语句是可以赋值成功的，但是放到for列表循环中就会报错） onLoad: function (options) {     // this.setData({       //   'YY[0].Y1':this.data.name_Items[0],       //   'YY[1].Y1':this.data.name_Items[1],       //   'YY[2].Y1':this.data.name_Items[2],       //   'YY[3].Y1':this.data.name_Items[3],       //   'YY[4].Y1':this.data.name_Items[4],       //   'YY[5].Y1':this.data.name_Items[5],       // })     var i = 0     var length = this.data.name_Items.length     for (let i = 0; i < length; i++) {       console.log(i)       this.setData({         ['YY[${i}].Y1']:this.data.name_Items[i],       })     }   }, 报错Error: Only digits (0-9) can be put inside [] in the path string: YY[${i}].Y1 [图片]