Arrays and objects and javascript map

Question

I have a problem. I have this array that I want to convert to an object with dynamic data.

this is the function

const prodSheet2 = prodSheet.map(da => 
                   ({ Artikelnummer: da[0], 
                        Benämning: da[1],
                        AnnanBemäning: da[2],
                        Kortnman: da[3],
                        Artikelgrupp: da[4]}))

and this expels data as:

    0 : {Artikelnummer: 100010, Benämning: aaa, AnnaBenämning: aaa, Kortnamn: a, Artikelgrupp:101}
    1 : {Artikelnummer: 100011, Benämning: aaa, AnnaBenämning: aaa, Kortnamn: b, Artikelgrupp:101}

but I wanted it to be like:

    100010 : {Artikelnummer: 100010, Benämning: aaa, AnnaBenämning: aaa, Kortnamn: a, Artikelgrupp:101}
    100011 : {Artikelnummer: 100011, Benämning: aaa, AnnaBenämning: aaa, Kortnamn: b, Artikelgrupp:101}

I have been trying different ways but cannot figure out. I am writing this in ReactJs

Please click [<>] snippet editor and create a minimal reproducible example noting INPUT and expected output. Where does the 10010 come from? — mplungjan
– mplungjan, Commented Feb 12, 2020 at 13:27
do you want a single object with Artikelnummer as keys, or more objects? — Nina Scholz
– Nina Scholz, Commented Feb 12, 2020 at 13:33

khierl · Accepted Answer · 2020-02-12 13:31:36Z

1

 const prodSheet2 = prodSheet.map(da => 
               ([da[0]]:{ Artikelnummer: da[0], 
                    Benämning: da[1],
                    AnnanBemäning: da[2],
                    Kortnman: da[3],
                    Artikelgrupp: da[4]}))

try this or check the js computed value

answered Feb 12, 2020 at 13:31

khierl

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2 Comments

Harmenx Over a year ago

This is wrong - you need to use return when using a map, otherwise you will get undefined.

Peter Collingridge Over a year ago

@Harmenx No you don't. The return is implicit with an arrow function. developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…

Nguyễn Văn Phong · Accepted Answer · 2020-02-12 13:36:43Z

1

You can use ES6 spread & Object.assign like below

var prodSheet = 
[
  [100010, "aaa", "aaa", "a", 101],
  [100011, "aaa", "aaa", "b", 101]
];
var result2 = Object.assign({}, ...prodSheet.map(da => ({[da[0]]: { Artikelnummer: da[0], 
                    Benämning: da[1],
                    AnnanBemäning: da[2],
                    Kortnman: da[3],
                    Artikelgrupp: da[4]}})));

                    
console.log(result2);

answered Feb 12, 2020 at 13:36

Nguyễn Văn Phong

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1 Comment

Nguyễn Văn Phong Over a year ago

Does this answer your question? Let me know if you need any help @Oblicion A

Nina Scholz · Accepted Answer · 2020-02-12 13:47:06Z

1

You could reduce the array and get a single object with Artikelnummer as key for the item informations.

const prodSheet2 = prodSheet.reduce((o, da) =>({
    ...o,
    [da[0]]: {
        Artikelnummer: da[0],
        'Benämning': da[1],
        'AnnanBemäning': da[2],
        Kortnman: da[3],
        Artikelgrupp: da[4]
   }
}), {});

edited Feb 12, 2020 at 13:47

answered Feb 12, 2020 at 13:35

Nina Scholz

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1 Comment

Ryan Searle Over a year ago

Artikelnummer is undefined, want to use da[0] instead.

Ashkan · Accepted Answer · 2020-02-12 13:36:36Z

0

    const prodSheet2 = prodSheet.map(da => {
        var key = da[0]
        var obj = {}
        obj[key] = {
            da : { 
                Artikelnummer: da[0], 
                Benämning: da[1],
                AnnanBemäning: da[2],
                Kortnman: da[3],
                Artikelgrupp: da[4]
            }
        }
        return obj
    })

answered Feb 12, 2020 at 13:36

Ashkan

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Comments

Ryan Searle · Accepted Answer · 2020-02-12 13:44:21Z

0

This will work.

 const prodSheet2 = prodSheet.reduce((acc, next) => {
    return { 
        ...acc,
        [next[0]]: {
            Artikelnummer: next[0],
            Benämning: next[1],
            AnnanBemäning: next[2],
            Kortnman: next[3],
            Artikelgrupp: next[4]
        }
    };
 }, {});

answered Feb 12, 2020 at 13:44

Ryan Searle

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