有時候需要把js多層複雜物件陣列新增或修改部分字段，可以採用如下的兩種方法。
1）深拷貝法
//以下**通過深拷貝複製，不會改變原res.data.equipmentdata物件
const newequipmentdata = res.data.equipmentdata.map(eq => ;
neweq.modules = neweq.modules.map(m=>;
newm.fields = newm.fields.map((f,i)=>//新增乙個虛擬欄位index，用於防止table出現重名key錯誤
return newfield;
return newm;
return neweq;
2）淺拷貝法
//以下**通過淺拷貝複製，會同時改變原res.data.equipmentdata物件
const newequipmentdata = res.data.equipmentdata.map(eq => //新增乙個虛擬欄位index，用於防止table出現重名key錯誤
return newfield;
return m;
return eq;
3）附錄，以下是res.data.equipmentdata物件的資料結構
"equipmentdata": [
id: 1,
equipmentid:"cabinet-001",
name:"機櫃-001",
client:"雲濤生物",
gatewayid:"gateway001",
creator:"admin",
createtime:"2019-09-06 14:07:06",
equipmenttemp:"機櫃-04",
panel:"cabinet-panel-04",
description:"",
getwayfields:[
index:1,
fieldname:"fanrunning",
gatewaytag:"pe001",
unit:"℃",
index:2,
fieldname:"isdooropen",
gatewaytag:"pe002",
unit:"ma",
modules:[
index:1,
modulename:"cn037-001",
moduletemp:"cn037",
fields:[
fieldname:"toplefttemp",
datatype:"real",
bytecount:2,
unit:"℃",
fieldname:"toprighttemp",
datatype:"real",
bytecount:2,
unit:"℃",
fieldname:"current",
datatype:"real",
bytecount:2,
unit:"ma",
index:2,
modulename:"cn037-002",
moduletemp:"cn037",
fields:[
fieldname:"toplefttemp",
datatype:"real",
bytecount:2,
unit:"℃",
fieldname:"toprighttemp",
datatype:"real",
bytecount:2,
unit:"℃",
fieldname:"current",
datatype:"real",
bytecount:2,
unit:"ma",
index:3,
modulename:"pw716-001",
moduletemp:"pw716",
fields:[
fieldname:"toplefttemp",
datatype:"real",
bytecount:2,
unit:"℃",
fieldname:"toprighttemp",
datatype:"real",
bytecount:2,
unit:"℃",
fieldname:"current",
datatype:"real",
bytecount:2,
unit:"ma",
fieldname:"runningoffan",
datatype:"boolean",
bytecount:1,
unit:"",
id: 2,
equipmentid:"cabinet-002",
name:"機櫃-002",
client:"雲濤生物",
gatewayid:"gateway002",
creator:"admin",
createtime:"2019-09-06 14:07:06",
equipmenttemp:"機櫃-08",
panel:"cabinet-panel-06",
description:"",
getwayfields:[
index:1,
fieldname:"fanrunning",
gatewaytag:"pe001",
unit:"℃",
index:2,
fieldname:"isdooropen",
gatewaytag:"pe002",
unit:"ma",
modules:[
index:1,
modulename:"cn037-001",
moduletemp:"cn037",
fields:[
fieldname:"toplefttemp",
datatype:"real",
bytecount:2,
unit:"℃",
fieldname:"toprighttemp",
datatype:"real",
bytecount:2,
unit:"℃",
fieldname:"current",
datatype:"real",
bytecount:2,
unit:"ma",
index:2,
modulename:"cn037-002",
moduletemp:"cn037",
fields:[
fieldname:"toplefttemp",
datatype:"real",
bytecount:2,
unit:"℃",
fieldname:"toprighttemp",
datatype:"real",
bytecount:2,
unit:"℃",
fieldname:"current",
datatype:"real",
bytecount:2,
unit:"ma",
index:3,
modulename:"pw716-001",
moduletemp:"pw716",
fields:[
fieldname:"toplefttemp",
datatype:"real",
bytecount:2,
unit:"℃",
fieldname:"toprighttemp",
datatype:"real",
bytecount:2,
unit:"℃",
fieldname:"current",
datatype:"real",
bytecount:2,
unit:"ma",
fieldname:"runningoffan",
datatype:"boolean",
bytecount:1,
unit:"",
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