How to modify the existing array object by type in javascript

Question

I would like to know how to modify the array object by type in javascript, I have a object in which fields type if only array change to as shown below(neglect the image which is always the last element) in javascript

function modifyObject(ob){
  var result = ob.map(e=>{
    Array.isArray(e.fields) ? e.fields.map(i=>({i:i}) :  
    Object.assign({}, ...ob.map(elm=>(elm.fields)));
  }
  )
}
var r1 = this.modifyObject(obj1);
var r2 = this.modifyObject(obj2);
var obj1=[
  {
    fields: {"cn":"IN"},
    id: 0,
    group: "Active"
  }
]

var obj2 =[
  {
    fields: ["city","name","img.jpg"],
    id: 0,
    group: "Active"
  }
]

Expected Output:

//if fields type is array
  {
    fields: {city:"city", name:"name"}  
  }

//if fields type is object 
  {
    fields: {"cn":"IN"}
  }

how about img.jpg? what to you want to display with its key? — elpmid
– elpmid, Commented Sep 2, 2020 at 3:34
@elpmid thanks for reply, no need to add img.jpg,( image alwys present in last element of fields) — ved
– ved, Commented Sep 2, 2020 at 3:35
Why are you not returning anything (result) from modifyObject function? — iAmOren
– iAmOren, Commented Sep 2, 2020 at 4:31
Why does this in var r1 = this.modifyObject(obj1); mean? — iAmOren
– iAmOren, Commented Sep 2, 2020 at 4:32

iAmOren · Accepted Answer · 2020-09-02 07:15:20Z

1

The problem is that your obj1 and obj2 are not objects, they're array containg one object each. modifiedObj would have to receive myObj[0], or you could modify it as I did:

function modifyObject(myObj) {
  let modifiedObj = myObj;
  if (Array.isArray(modifiedObj.fields)) {
    let objFields = {};
    modifiedObj.fields.forEach(field => objFields[field] = field);
    modifiedObj.fields = objFields;
  }
  return modifiedObj; 
}

var obj1 = {
  fields: {"cn":"IN"},
  id    : 0,
  group : "Active"
};
var obj2 = {
  fields: ["city","name","img.jpg"],
  id    : 0,
  group : "Active"
};

var r2 = modifyObject(obj2);
console.log(r2);

Let me know if it's unclear. Please give me a +rep if it helps.

edited Sep 2, 2020 at 7:15

iAmOren

2,8122 gold badges14 silver badges23 bronze badges

answered Sep 2, 2020 at 3:59

Pedro Silveira

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