JavaScript converting an object to an array

Question

I've researched for about a day and haven't had any luck. I'm trying to access the object properties to simply add it to a typed class in JavaScript. How can i accomplish this? This is the object im receiving:

And this my code resulting in the following error:

Object.keys(selected).forEach(function (key) {
        console.log(selected[key]);
    });

Error:

ERROR TypeError: Cannot convert undefined or null to object

Any help is most appreciated as I've come to here as a last resort.

selected looks like this:

Object.keys(selected)... the selected in json string:

{
 "selected": [
    {
      "Id": 4,
      "Type": 0,
      "Image": "",
      "Name": "TestName",
      "Roles": "TestRole",
      "Facility": "TestFacil"
    }
  ]
}

It doesn't look like selected.selected exists. Try selected[0] and see if it works. You might also have to change the log line to ouput selected[0][key]. — Corey Ogburn
– Corey Ogburn, Commented Apr 27, 2018 at 19:30
Maybe I'm not recreating your situation properly then. Here's a jsfiddle of my attempt to do so: jsfiddle.net/rct8y82L — Corey Ogburn
– Corey Ogburn, Commented Apr 27, 2018 at 19:33
please stringify the object and post it here instead of showing us pictures — Kristianmitk
– Kristianmitk, Commented Apr 27, 2018 at 19:35

HMR · Accepted Answer · 2018-04-27 19:43:06Z

3

The variable selected is an array, you can try this:

selected.forEach(
  item=>
    Object.keys(item).forEach(function (key) {
      console.log(item[key]);
    })
)

It could also be:

selected.selected.forEach(

In your question it's not clear what the name is of the value you are logging the json string of.

edited Apr 27, 2018 at 19:43

answered Apr 27, 2018 at 19:35

HMR

39.5k26 gold badges99 silver badges175 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

tshoemake Over a year ago

This did it. It was selected.selected.forEach that worked for me. Thank you sir!

mooga · Accepted Answer · 2018-04-27 20:42:40Z

1

let data = {
 "selected": [
    {
      "Id": 4,
      "Type": 0,
      "Image": "",
      "Name": "TestName",
      "Roles": "TestRole",
      "Facility": "TestFacil"
    }
  ]
}


let arr = [];
for (var key in data) {
  arr.push(data[key]);
}

console.log(arr)

or you can use that if you wanna convert the whole object to arrays of arrays

        let data = {
         "selected": [
            {
              "Id": 4,
              "Type": 0,
              "Image": "",
              "Name": "TestName",
              "Roles": "TestRole",
              "Facility": "TestFacil"
            }
          ]
        }


    var arr = [];
    var i =0;
    for( var key in data){
      var innerArr = [key];
      arr.push(innerArr)
      for(var values in data[key]){
       for(var keys in data[key][values]){
         var innerArr3 = [keys];
         innerArr.push(innerArr3)
         innerArr3.push(data[key][values][keys])
        }
      }
    }
     console.log(arr)

edited Apr 27, 2018 at 20:42

answered Apr 27, 2018 at 19:44

mooga

3,3274 gold badges25 silver badges40 bronze badges

2 Comments

tshoemake Over a year ago

This gives me the following error.. TypeError: selected.forEach is not a function

mooga Over a year ago

@tshoemake, i have added 2 options ,so to make the outer object as an array or to dig in the whole objects to arrays

Collectives™ on Stack Overflow

JavaScript converting an object to an array

2 Answers 2

1 Comment

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related