split object with matching keys in existing array

Question

myArray   = ['1', '2', '3'];

myObj     = { 1-vehicle : 'car', 2-vehicle : 'bike', 3-vehicle : 'train' };

resultObj = {
    '1': { '1-vehicle': 'car' }, 
    '2': { '2-vehicle': 'bike' },
    '3': { '3-vehicle': 'train' }
};

I am having an object where each key is starting with a number and also I have and array with some values. I am trying to match those key and values and split up the object. Please help me. Thanks in advance.

I have tried it and i am posting my code below but I am not successful

{
    Object.keys(myObj).filter((key: any) => {
        for (const i in myArray) {
            if (myArray[i] === key.charAt(0)) {
                newObj[key] = myObj[key]
                resultObj[myArray[i]] = newObj
            }
        }
    })
}

maybe a word is necessary. by taking changing keys, which requires more information like a given array or if you need to split the keys for getting adddtional information, you may better use an array with objects who have same key names and all other information is stored inside of the object with the same key, like an id. — Nina Scholz
– Nina Scholz, Commented Jan 17, 2019 at 9:12

Nina Scholz · Accepted Answer · 2019-01-17 09:13:49Z

3

You could map the wanted parts and assign objects to a single object.

This solution feature a closure over the combined key of the object.

var array = ['1' , '2' , '3'],
    object = { '1-vehicle': 'car', '2-vehicle': 'bike', '3-vehicle': 'train' },
    result = Object.assign(
        ...array.map(v => (k => ({ [v]: { [k]: object[k] } }))(v + '-vehicle'))
    );

console.log(result);

answered Jan 17, 2019 at 9:13

Nina Scholz

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Komal Bansal · Accepted Answer · 2019-01-17 09:33:53Z

2

var res = {};
for(let k in myObj){
  if(k[0])res[k[0]]= {[k]:myObj[k]};
}

the simplest and shortest solution is

edited Jan 17, 2019 at 9:33

answered Jan 17, 2019 at 9:22

Komal Bansal

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