Why is this JSON not valid?

Question

JSON

In one script I used JSON. It seemed to me that it was valid, but I began to run it through the validator and got an error.
Here is the JSON itself. What's wrong with it?

{
        "id": 1
        },

        {
        "id": 2
        },

        {
        "id": 3
        },
        {
        "id": 4
        }

Checked with this service jsonlint.com

Answer 1

JSON document can only contain 1 object
Wrap everything in square brackets - will be an array