how do add to a key value to javascript object

Question

I am trying to learn JS. It seems simple but I am not sure how to do this.

having this javascript object based on this good thread

var people = {
  1: { name: 'Joe' },
  2: { name: 'Sam' },
  3: { name: 'Eve' }
};

How do I add the following value

4: { name: 'John' }

To get name Eve I write

 people["1"].name

In the original thread, the keys were sparse (1, 3, 8) not consecutive (1,2,3), so I don't know if all the suggestions to switch to an array fit what the questioner wants to do. — Nosredna
– Nosredna, Commented May 27, 2009 at 20:47

tvanfosson · Accepted Answer · 2009-05-27 20:39:46Z

15

Assign the anonymous object to it the way you would any other value.

people["4"] = { name: 'John' };

For what it's worth, since your keys are numeric you could also use zero-based indices and make people an array.

var people = [ { name: 'Joe' },
               { name: 'Sam' },
               { name: 'Eve' } ];

and

alert( people[2].name ); // outputs Eve
people[3] = { name: 'John' };

answered May 27, 2009 at 20:39

tvanfosson

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Comments

Fabien Ménager · Accepted Answer · 2009-05-27 20:41:09Z

1

I think people should be an array :

var people = [
  { name: 'Joe' },
  { name: 'Sam' },
  { name: 'Eve' }
];

as the keys are integers, so you can add a person by :

people.push({name:'John'});

You can acces to the people by doing :

var somebody = people[1]; /// >>> Sam

answered May 27, 2009 at 20:41

Fabien Ménager

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