How to create an object dynamically using JavaScript?

Question

I'm trying to create a new object from an array of strings, but I'm not able to create the desired object correctly.

I'm trying to create an object like:

{
  "Employee1": {
    "id": "Employee1"
  },
  "Employee2": {
    "id": "Employee2"
  }
}

Here's my code:

function listToItemById(qsList, key = "id") {
  const result = {};
  qsList.forEach((item) => {
    result[item][key] = item;
  });

  return result;
}

console.log(listToItemById(["Employee1", "Employee2", "Employee3", "Employee4", "Employee5", "Employee6", "Employee7", "Employee8"]));

Try changing the one line in the loop: result[item] = {[key] : item}; — user2740650
– user2740650, Commented Mar 6, 2021 at 14:57

Julia · Accepted Answer · 2021-03-06 15:05:15Z

3

Yes.

First, we have to set result[item] to {} (a new, empty object):

function listToItemById(qsList, key = "id") {
  const result = {};

  qsList.forEach((item) => {
    result[item] = {};
    result[item][key] = item;
  });

  return result;
}

console.log(listToItemById(["Employee1", "Employee2", "Employee3", "Employee4", "Employee5", "Employee6", "Employee7", "Employee8"]));

edited Mar 6, 2021 at 15:05

answered Mar 6, 2021 at 14:57

Julia

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Comments

Karthikeyan · Accepted Answer · 2021-03-06 15:05:20Z

0

employes.reduce((obj, emp) => {
    if(typeof(obj) === "string") {
        var temp = {}
        temp[obj] = {id:obj}
        obj = temp;
    }
    obj[emp] ={id:emp};
    return obj;
})

answered Mar 6, 2021 at 15:05

Karthikeyan

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