Merging values from an array of strings into a nested object in javascript-CodePudding

I want to merge values from an array into a static nested object. The array containing the values is something like this,

['name=ABC XYZ', 'hobbies=[M,N,O,P]', 'profession=S', 'age=27']

and the object in which the values has to be merged is,

const person = {
    details_1: {
      name: null,
      hobbies: null,
      profession: null
    },
    details_2: {
      age: null
    }
  };

I want my output object to look like below,

const updated_person = {
    details_1: {
      name: 'ABC XYZ',
      hobbies: [M,N,O,P],
      profession: 'S'
    },
    details_2: {
      age: 27
    }
  };

Thanks a lot for your help!

CodePudding user response：

There is no way to cleanly merge an unstructured array into a structured object such that the array values end up in the appropriately keyed person properties.

javascript does provide the assign() function that merges objects but for YOUR requirements your source data needs to be an object similarly structured and not an array.

so this:

['name=ABC XYZ', 'hobbies=[M,N,O,P]', 'profession=S', 'age=27']

would need to become this:

const source= [{details_1: {"name":"ABC XYZ", "hobbies":"[M,N,O,P]", "profession":"S"}, details_2: {"age":"27"}}]

such that a call to Object.assign():

const new_person =  Object.assign(person, source[0]);

fills this

const person = {
  details_1: {
    name: null,
    hobbies: null,
    profession: null
  },
  details_2: {
    age: null
  }
};

properly, though you may need to clone or instantiate and empty person first.

or, if person is an Object you could have a fill() method that knows what to do with the array data.

CodePudding user response：

Go throug the array with a forEach loop, split it the string with "=" symbol. Add the first element of split result as key to the object, and the second as value. You are done.

const data = ['name=ABC XYZ', 'hobbies=[M,N,O,P]', 'profession=S', 'age=27']

const dataObj = {}

data.forEach((rec)=>{
  words = rec.split("=");
  dataObj[words[0]] = words[1];
})

console.log(dataObj);