How to remove objects properties which values are empty string for same key in all objects?

Question

How to remove objects properties which values are empty string for same key? For example, here I want to remove division key from object.

const data= [
  {
    "id": "1",
    "status": "Y",
    "role": "any",
    "division": "",
    "name" : "test"
  },
  {
    "id": "2",
    "status": "N",
    "role": "admin",
    "division": "",
    "name" : ""
  },
{
    "id": "3",
    "status": "N",
    "role": "test",
    "division": "",
    "name" : "any"
  }
]

None of the objects have `null` values. If you mean empty string, then `name` key also should be removed from the second object. Or do you want to remove the keys which have empty / null value for ALL the objects in the array? Please create a [mcve] with a clear problem statement and the code you've tried — adiga, Jun 26 '20 at 13:39
Yes, I mean empty string, and yes I want to remove only those keys which values are empty in all objects. Here I am referring division key. I don't want to remove name key, since name value is available in first and third object. — Santraj Kumar, Jun 26 '20 at 13:45

Arthur Rubens · Accepted Answer · 2020-06-26T21:57:32.473

Something like this:

const data= [{
    "id": "1",
    "status": "Y",
    "role": "any",
    "division": "",
    "name" : ""
  }, {
    "id": "2",
    "status": "N",
    "role": "admin",
    "division": "",
    "name" : "any"
  }, {
    "id": "3",
    "status": "N",
    "role": "test",
    "division": "",
    "name" : "any"
  }];


  const mergedObject = data.reduce((akk, item) => {
    for (const [key, value] of Object.entries(item)) {
      if(typeof akk[key] === 'undefined') {
        akk[key] = '';
      }
      akk[key] += item[key];
    }
    return akk;
  }, {});
  
  data.map((arrayItem, index) => {
    for (const [key, value] of Object.entries(arrayItem)) {
      if(mergedObject[key].length === 0) {
        delete arrayItem[key]
      }
    }
    return arrayItem;
  });
  console.log(data);

How to remove objects properties which values are empty string for same key in all objects?

1 Answers1