Rename the keys in an object

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var addObjectResponse = [{
    'SPO2': '222.00000',
    'VitalGroupID': 1152,
    'Temperature': 36.6666666666667,
    'DateTimeTaken': '/Date(1301494335000-0400)/',
    'UserID': 1,
    'Height': 182.88,
    'UserName': 'Admin',
    'BloodPressureDiastolic': 80,
    'Weight': 100909.090909091,
    'TemperatureMethod': 'Oral',
    'Resprate': 111,
    'HeartRate': 111,
    'BloodPressurePosition': 'Standing',
    'VitalSite': 'Popliteal',
    'VitalID': 1135,
    'Laterality': 'Right',
    'HeartRateRegularity': 'Regular',
    'HeadCircumference': '',
    'BloodPressureSystolic': 120,
    'CuffSize': 'XL',
}];

How to rename the keys... like SPO2 into O2... there are such many objects in the array...

javascript
10 Answers

Here's one that works over an array of objects and takes a map of old object keys to new object keys.

I mostly copied the very nice code from here and just made it operate over arrays of objects rather than a single one.

Code

const renameKeys = (keysMap, objArr) =>
  (renamedArr = objArr.map((obj) =>
    Object.keys(obj).reduce(
      (acc, key) => ({
        ...acc,
        ...{ [keysMap[key] || key]: obj[key] },
      }),
      {}
    )
  ));

Example

renameKeys({ tWo: 'two', FreE: 'three' }, [
  { one: 1, tWo: 2, three: 3 },
  { one: 100, two: 200, FreE: 300 },
]);
[ { one: 1, two: 2, three: 3 }, { one: 100, two: 200, three: 300 } ]
user_7144130

A little late to the game here but how about something like this:

const newAddObjectResponse = addObjectResponse.map((obj) => {
    const {SPO2: O2, ...rest} = obj
    return {O2, ...rest}
})

If you want to replace your original array then you could do:

let addObjectResponse = [
    {
        SPO2: '222.00000',
        VitalGroupID: 1152,
        Temperature: 36.6666666666667,
        DateTimeTaken: '/Date(1301494335000-0400)/',
        UserID: 1,
        Height: 182.88,
        UserName: 'Admin',
        BloodPressureDiastolic: 80,
        Weight: 100909.090909091,
        TemperatureMethod: 'Oral',
        Resprate: 111,
        HeartRate: 111,
        BloodPressurePosition: 'Standing',
        VitalSite: 'Popliteal',
        VitalID: 1135,
        Laterality: 'Right',
        HeartRateRegularity: 'Regular',
        HeadCircumference: '',
        BloodPressureSystolic: 120,
        CuffSize: 'XL',
    },
]

addObjectResponse = addObjectResponse.map((obj) => {
    const {SPO2: O2, ...rest} = obj
    return {O2, ...rest}
})
user_88576640
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