Convert Array groups into object

Question

I have an array. And i want to convert them into a group of objects.

below is my array

[ null,
[ 5, 6 ],
[ 7, 8 ],
[ 9, 10 ],
[ 13, 14 ] ]

Then i tried them to convert into object by pairs but what i had was this:

{ '0': null,
'1': [ 5, 6 ],
'2': [ 7, 8 ],
'3': [ 9, 10 ],
'4': [ 13, 14 ] }

What i'm trying to achieve is something like below:

    {
        "0": 5,
        "1": 6,
    },
    {
        "0": 7,
        "1": 8,
    },
    {
        "0": 9,
        "1": 10,
    },
    {
        "0": 13,
        "1": 14,
    },

thank you for those who will help

What you tried? please attach the relevant code to the question — Michael
– Michael, Commented Jun 12, 2018 at 11:25
@AkhilAravind bro yeah i saw that post and im having the above result and not the result i wanted. I believe that code is for when you have a single array but it coulde be reused and needs a bit of tweaks in order to achieve my goal — Tramyer
– Tramyer, Commented Jun 12, 2018 at 11:48

Nina Scholz · Accepted Answer · 2018-06-12 11:49:35Z

2

You could filter falsy values and map objects where you have assigned the array.

var array = [null, [5, 6], [7, 8], [9, 10], [13, 14]],
    result = array
        .filter(Boolean)
        .map(a => Object.assign({}, a));
        
console.log(result);

Wrapped in a function

function getObjects(array) {
    return array
        .filter(Boolean)
        .map(a => Object.assign({}, a));
}

console.log(getObjects([null, [5, 6], [7, 8], [9, 10], [13, 14]]));

edited Jun 12, 2018 at 11:49

answered Jun 12, 2018 at 11:28

Nina Scholz

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1 Comment

Tramyer Over a year ago

tried your code but when i tried to create a function with it. im having the same result above.

Ankit Agarwal · Accepted Answer · 2018-06-12 11:49:41Z

0

You should have a condition that skip the null value in the array:

function changeArray(arr){
  var res = [];
  arr.forEach((item)=>{
    let obj = {};
    if(item){
      item.forEach((val, index)=>{
        obj[index] = val;
      });
     res.push(obj);
    }
  });
  return res;
}

var arr1 = [ null,
[ 5, 6 ],
[ 7, 8 ],
[ 9, 10 ],
[ 13, 14 ] ];
console.log(changeArray(arr1));

var arr2 = [ null,
[ 5, 6, 7 ],
[ 7, 8, 9 ]];
console.log(changeArray(arr2));

edited Jun 12, 2018 at 11:49

answered Jun 12, 2018 at 11:27

Ankit Agarwal

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4 Comments

Tramyer Over a year ago

How do i turn this into a function? im kinda new to js

Ankit Agarwal Over a year ago

@Tramyer see the updated answer. If you are new then use simple loop like above instead of complex filter and map operations. So that you can learn the code style and logic.

Tramyer Over a year ago

thanks mate i've been trying to convert yours into a function but damn im having the same result. Good to see some people here it really helps the new ones.

Ankit Agarwal Over a year ago

@Tramyer glad to help.

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