[javascript] Uncaught TypeError: data.push is not a function

I am trying to push

data.push({"country": "IN"});

as new id and value to a json string. but it gives the following error

Uncaught TypeError: data.push is not a function

data{"name":"ananta","age":"15"}

Advance Thanks for your reply

I think you set it as

var data = []; 

but after some time you made it like:

data = 'some thing which is not an array'; 

then data.push('') will not work as it is not an array anymore.

Also make sure that the name of the variable is not some kind of a language keyword. For instance, the following produces the same type of error:

var history = [];
history.push("what a mess");

replacing it for:

var history123 = [];
history123.push("pray for a better language");

works as expected.

one things to remember push work only with array[] not object{}.

if you want to add Like object o inside inside n

_x000D_
_x000D_
a={ b:"c",
D:"e",
F: {g:"h",
I:"j",
k:{ l:"m"
}}
}

a.F.k.n = { o: "p" };
a.F.k.n = { o: "p" };
console.log(a);
_x000D_
_x000D_
_x000D_

Try This Code $scope.DSRListGrid.data = data; this one for source data

            for (var prop in data[0]) {
                if (data[0].hasOwnProperty(prop)) {
                    $scope.ListColumns.push(
                            {
                                "name": prop,
                                "field": prop,
                                "width": 150,
                                "headerCellClass": 'font-12'
                            }
                    );
                }
            }
            console.log($scope.ListColumns);

Your data variable contains an object, not an array, and objects do not have the push function as the error states. To do what you need you can do this:

data.country = 'IN';

Or

data['country'] = 'IN';

make sure you push into an Array only and if their is error like Uncaught TypeError: data.push is not a function** then check for type of data you can do this by consol.log(data) hope this will help

you can use push method only if the object is an array:

var data = new Array();
data.push({"country": "IN"}).

OR

data['country'] = "IN"

if it's just an object you can use

data.country = "IN";