Page({ data: { obj1: { a: 1, b: 2 }, obj2: { b: 3, c: 4 }, a: 5 } }) 最终组合成的对象是 {a: 5, b: 3, c: 6}。

错误信息： ledDeviceType.js? [sm]:50 this.data.gGlobalData.checkboxItems:  (3) [{…}, {…}, {…}] ledDeviceType.js? [sm]:51 this.data.gSystemConfigTable.gLedDeviceModelType:  undefined ledDeviceType.js? [sm]:52 values:  (2) ["2", "1"] Default systemConfigTable.ledDeviceModelType:  undefined VM1506 WAService.js:2 TypeError: Cannot set property 'checked' of undefined     at vt.checkboxChange (ledDeviceType.js? [sm]:55)     at Object.o.safeCallback (VM1506 WAService.js:2) 。。。。 ======================================================================================= 代码： // ledDeviceType.js Page({   onShareAppMessage() {     return {       title: 'checkbox',       path: 'page/component/pages/checkbox/checkbox'     }   },   data: {     gSystemConfigTable: {       // 全局配置参数信息，保存参数，用于后续设置       gLedDeviceModelType: 2,     },     gGlobalData: {       checkboxItems: [         {value: '0', name: '1111111'},         {value: '1', name: '1111112'},         {value: '2', name: '1111113'},       ]     }   },   // 选中点击时触发该事件   checkboxChange (e) {     let values = e.detail.value;     let checkboxItems = this.data.gGlobalData.checkboxItems;     let systemConfigTable = {       ledDeviceModelType: this.data.gSystemConfigTable.gLedDeviceModelType,     }     console.log('this.data.gGlobalData.checkboxItems: ', this.data.gGlobalData.checkboxItems)     console.log('this.data.gSystemConfigTable.gLedDeviceModelType: ', this.data.gSystemConfigTable.gLedDeviceModelType)     console.log('values: ', values, 'Default systemConfigTable.ledDeviceModelType: ', systemConfigTable.ledDeviceModelType)     // 赋初值，取消勾选情况下使用默认值     checkboxItems[systemConfigTable.ledDeviceModelType].checked = true      // ..............................     this.setData({       checkboxItems, checkboxItems,       gSystemConfigTable: systemConfigTable     })   } })