Convert json to array

Question

I am trying to convert a json string to an array but i still get json code in return when i parse it.

var slag = [];
                for(var i=0; i < data.length; i++)
                {
                    var string = JSON.stringify(data[i]);
                    var parse = JSON.parse(string)
                    slag.push(parse);
                }
                console.log(slag);

now i still get this output

0: {id: "4", club: "driver", afstand: "230", shot: "straight", uitvoering: "perfect"}
1: {id: "9", club: "ijzer7", afstand: "140", shot: "straight", uitvoering: "perfect"}

but i want something like this in an array

[4, "driver", 240, "straight", "perfect"]

Possible duplicate of How to convert JSON object to JavaScript array — Dean Coakley
– Dean Coakley, Commented Aug 17, 2019 at 17:44

Pranav C Balan · Accepted Answer · 2019-08-17 17:39:07Z

7

You need to extract values from the object, use Object.values method after parsing the JSON string.

var parse = Object.values(JSON.parse(string))

FYI : You can do it directly to the object instead of stringifying and parsing(which doesn't makes any sense). So simply iterate and extract values from object using Object.values method.

for(var i=0; i < data.length; i++){
    slag.push(Object.values(data[i]));
}

edited Aug 17, 2019 at 17:39

answered Aug 17, 2019 at 17:33

Pranav C Balan

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Comments

Mohammed Amir Ansari · Accepted Answer · 2019-08-17 17:34:56Z

3

Simply do

let data = [{id: "4", club: "driver", afstand: "230", shot: "straight", uitvoering: "perfect"}, {id: "9", club: "ijzer7", afstand: "140", shot: "straight", uitvoering: "perfect"}];

var slag = data.map(doc => Object.values(doc));

console.log(slag);

hope this helps :)

answered Aug 17, 2019 at 17:34

Mohammed Amir Ansari

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Comments

Neel Rathod · Accepted Answer · 2019-08-17 18:43:28Z

I can't figure out your expected outcome, But I have 2 solutions for you If you want your response like:

[
  "4",
  "driver",
  "230",
  "straight",
  "perfect",
  "9",
  "ijzer7",
  "140",
  "straight",
  "perfect"
]

Then you need to take values of an object Object.values(element) and make another loop over it and push it in slug

const array = [{
    id: "4",
    club: "driver",
    afstand: "230",
    shot: "straight",
    uitvoering: "perfect"
}, {
    id: "9",
    club: "ijzer7",
    afstand: "140",
    shot: "straight",
    uitvoering: "perfect"
}];

const slug = [];

 for (let i= 0; i < array.length; i += 1) {
    const element = array[i];
    Object.values(element).forEach((r) => { slug.push(r) });
 }

console.log(slug);

If you want your outcome like this:

[
  [
    "4",
    "driver",
    "230",
    "straight",
    "perfect"
  ],
  [
    "9",
    "ijzer7",
    "140",
    "straight",
    "perfect"
  ]
]

Then you just need to add map() method only

const array1 = [{
    id: "4",
    club: "driver",
    afstand: "230",
    shot: "straight",
    uitvoering: "perfect"
}, {
    id: "9",
    club: "ijzer7",
    afstand: "140",
    shot: "straight",
    uitvoering: "perfect"
}];

const slug = array1.map((m) => { return Object.values(m); });
console.log(slug);

In both cases Object.values() is used for such operations

Dan Walsh · Accepted Answer · 2019-08-17 17:47:30Z

I'm a little confused as to why you're stringifying it and then parsing it right after? date[i] and parse would have the same output unless I'm missing something.

If you want to deconstruct an objects values into an array you can use the Object.values method.

Consider the following:

let x = {id: "4", club: "driver", afstand: "230", shot: "straight", uitvoering: "perfect"};

console.log(Object.values(x)); 
// output: ["4", "driver", "230", "straight", "perfect"]

So if you wanted a multi-dimensional array (not sure why this would be desired but it looks like that's what you're trying to accomplish) you could do this:

var slag = [];

for(var i=0; i < data.length; i++) {
    slag.push(Object.values(data[i]);
}

console.log(slag);

That would output:

0: ["4", "driver", "230", "straight", "perfect"]
1: ["9", "ijzer7", "140", "straight", "perfect"]

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