How to map an array to object

Question

Is there a built-in lodash function to take this:

let params = ['foo', 'bar', 'baz', 'zle'];
let newArray = [];

params.forEach((element, index) => {
  let key = "name" + index;
  newArray.push({ key: element })
});

console.log(newArray);

And expected output should be like this:

var object = {
  a: {
    name1: "foo",
    name2: "bar",
  },
  b: {
    name1: "baz",
    name2: "zle",
  }
}

What is the delimiter for a and b in output. i.e what is the deciding on where to break the array params. You can simply use Object.assign() to convert Array to object, But output on params will be single dimension object. Refer this stackoverflow.com/questions/4215737/convert-array-to-object — Abhinav Kulshreshtha
– Abhinav Kulshreshtha, Commented Aug 22, 2019 at 6:29
Do you want an array of objects or a nested object as output? Are the keys consecutive alphabets or are a and b dummy keys? — adiga
– adiga, Commented Aug 22, 2019 at 6:33
Your code suggests you want an array in newArray, but then in your expected output you show a nested object. — connexo
– connexo, Commented Aug 22, 2019 at 6:54

Bob White · Accepted Answer · 2019-08-22 06:56:38Z

2

May this help you. I know that you should provide more information that what do really want to implement. but i got an idea that might help you.

let params = ['foo', 'bar', 'baz', 'zle'];
const keys = ['a', 'b', 'c', 'd']

let data = {}

while(params.length){

  const [a, b] = params.splice(0, 2) 
  const key = keys.splice(0, 1)

  data[key] = {
      name1: a,
      name2: b,
    }

}

console.log(data)

output will be:

{
  a: {
    name1: "foo",
    name2: "bar",
  },
  b: {
    name1: "baz",
    name2: "zle",
  }
}

edited Aug 22, 2019 at 6:56

answered Aug 22, 2019 at 6:48

Bob White

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1 Comment

Priya Over a year ago

Thanks for the help. I got the solution.

Vibhanshu Sharma · Accepted Answer · 2019-08-23 05:42:57Z

1

You can convert your array into Json like format that can be done like this

var jsonObj = {};
for (var i = 0 ; i < sampleArray.length; i++) {
jsonObj["position" + (i+1)] = sampleArray[i];
 }

answered Aug 23, 2019 at 5:42

Vibhanshu Sharma

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Comments

Sebastian Kaczmarek · Accepted Answer · 2019-11-25 07:23:20Z

1

I have solved the issue. Solution for this issue is

 let colLength = 4;

 let breakableArray = _.chunk(data, 4);

  breakableArray.forEach((arrayObject,key)=>{
    let object = new Object();
    for(let i = 0; i < colLength; i++) {
      object[i] = arrayObject[i] != undefined ? arrayObject[i] : "-";
    }  
    finalObject[key] = object;
  })

edited Nov 25, 2019 at 7:23

Sebastian Kaczmarek

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answered Aug 23, 2019 at 5:38

Priya

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