Using variables as keys in multidimensional object

Question

If I have some values and I want to store it as an object. So finally I need to call JSON.stringify() (because I am trying to store it in chrome extension)

var id = '1';
var name = 'Mali Bakery'
var url = 'http://example.com/'

So I thought the best thing would be sorting it like:

var items = {
     id : {
        'name': name,
        'url': url
     }
}

But I couldn't figure out how to put the variables inside the object template.

I tried using

item = {}
item[id] = id
item[id].name = name  
// etc

items.push(item);

// and also, this approach too
items.id = id

But no success.

You should look here : https://stackoverflow.com/questions/7545641/javascript-multidimensional-array — Vincent Decaux, Jul 16 '17 at 18:10
Keep in mind that `name` won't work as a variable if it's a global variable. `window.name` will overwrite it. — 4castle, Jul 16 '17 at 18:18

score 2 · Answer 1 · answered Jul 16 '17 at 18:12

You can put id in brackets [] so that it gets evaluated to the variables value:

var id = '1';
var name = 'Mali Bakery'
var url = 'http://example.com/'

var items = {
      [id] : {
        name,
        url
     }
}

console.log(items);

Note that you shouldn't use name as a variable's name!

score 2 · Answer 2 · answered Jul 16 '17 at 18:19

You could do this

var id = '1';
var name = 'Mali Bakery'
var url = 'http://example.com/'
var items = {}

items[id] = {
    'name': name,
    'url': url
}

console.log(items);

This gives the following output:

{ 1:{ name: "Mali Bakery", url: "http://example.com/" } }

score 1 · Answer 3 · answered Jul 16 '17 at 18:09

1

var items = {};
items[id] = { name, url };

answered Jul 16 '17 at 18:09

ideaboxer

3,513
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40
58

score 1 · Answer 4 · answered Jul 16 '17 at 18:13

1

    var id = '1';
    var name = 'Mali Bakery'
    var url = 'http://example.com/'

    var obj = {
            'name': name,
            'url': url
         }

    var items = {};

    items[id] = obj;

answered Jul 16 '17 at 18:13

Prakash Sharma

13,640
3
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35

Using variables as keys in multidimensional object

4 Answers4