如何在JavaScript中以以下形式转换对象数组？ [重复]
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我有以下形式的对象数组，
[
employeeID: 112,
devicetype: 'Laptop',
devicename: 'ZENW42NMNC5431',
deviceID: '123EEB9',
devicePrimary: 'Yes'
employeeID: 112,
devicetype: 'Desktop',
devicename: 'ZENW42NMNC5432',
deviceID: '123EEB10',
devicePrimary: 'No'
employeeID: 113,
devicetype: 'Laptop',
devicename: 'ZENW42NMNC5431',
deviceID: '123EEB9',
devicePrimary: 'Yes'
]
我正在尝试根据employeeID合并对象属性。因此，如何在javascript中将其转换为以下形式。
[
employeeID: 112,
devices: [
devicetype: 'Laptop',
devicename: 'ZENW42NMNC5431',
deviceID: '123EEB9',
devicePrimary: 'Yes'
,
devicetype: 'Desktop',
devicename: 'ZENW42NMNC5432',
deviceID: '123EEB10',
devicePrimary: 'No'
]
employeeID: 113,
devices: [
devicetype: 'Desktop',
devicename: 'ZENW42NMNC5433',
deviceID: '123EEB11',
devicePrimary: 'No'
]
]
答案
const initialArray = [
employeeID: 112,
devicetype: 'Laptop',
devicename: 'ZENW42NMNC5431',
deviceID: '123EEB9',
devicePrimary: 'Yes'
,
employeeID: 112,
devicetype: 'Desktop',
devicename: 'ZENW42NMNC5432',
deviceID: '123EEB10',
devicePrimary: 'No'
,
employeeID: 113,
devicetype: 'Laptop',
devicename: 'ZENW42NMNC5431',
deviceID: '123EEB9',
devicePrimary: 'Yes'
]
const employees = [];
// Loop trough initial array
for(let i = 0; i < initialArray.length; i++)
let employeeId = initialArray[i].employeeID;
// this will check if id is already in array and skip adding employee to list if he is already in it
let inArray = employees
.filter(employee => employee.employeeId === employeeId)
.length
if(!inArray)
employees.push(employeeId)
// get index of employee in new array thats filled with employees
let index = employees.map((el) => el.employeeId).indexOf(employeeId);
// we need to declare property "devices", but we first have to check if it exists. if it exists, it means it may be filled already, we shouldnt redeclare it because it will overwrite data in it.
if(!employees[index].devices)
employees[index].devices = [];
// push device in
employees[index].devices.push(
devicetype: initialArray[i].devicetype,
devicename: initialArray[i].devicename,
deviceID: initialArray[i].deviceID,
devicePrimary: initialArray[i].devicePrimary,
)
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