Adding to an object in JAVASCRIPT

Answer 1

You should be able to use the syntax that you posted. Javascript lets you add properties to an object just by assignment. Since the JSON string is just parsed as a normal object, you can just specify a new property and assign the values you want.

Answer 2

Using your example above, something like:

data.car[0] = { name: "civic" };
data.car[1] = { name: "s2000" };

This will assign a new object to the array element, with one property 'name'. Alertnatively, for a bit more code re-use:

function car( name) {
    this.name = name
}
data.car[0] = new car("civic");
data.car[1] = new car("s2000");

Answer 3

This will add a new car to the array:-

data.car.push({name: "Zafira"});

BTW, you want to be careful with using eval to parse JSON, it could lead you code open to an injection attack.

Answer 4

Assuiming you have an input box you could attach a blur event (or whenever you want the car added)

function addCar(carname){
    data.car.push({name:carname})
}

Answer 5

In javascript there are 2 ways to add a property to an object.

1. With direct

   data.car[0].name = 'jose';

2. Acessing just like a array:

   data.car[0]['name'] = 'jose';

So if you have one field to a name and one for the value you can create then just like:

<input type="text" id="name" />
<input type="text" id="value" />
<script type="text/javascript">
    var d = function(id) {
        return document.getElementById(id);
    }
    data.car[0][d("name").value] = d("value").value
</script>