未捕获的 TypeError: data.push 不是一个函数

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';

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";

To use the push function of an Array your var needs to be an Array.

Change data{"name":"ananta","age":"15"} to following:

var data = [
{
"name": "ananta",
"age": "15",
"country": "Atlanta"
}
];


data.push({"name": "Tony Montana", "age": "99"});


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


..

The containing Array Items will be typeof Object and you can do following:

var text = "You are " + data[0]->age + " old and come from " + data[0]->country;

Notice: Try to be consistent. In my example, one array contained object properties name and age while the other only contains country. If I iterate this with for or forEach then I can't always check for one property, because my example contains Items that changing.

Perfect would be: data.push({ "name": "Max", "age": "5", "country": "Anywhere" } );

So you can iterate and always can get the properties, even if they are empty, null or undefined.

edit

Cool stuff to know:

var array = new Array();

is similar to:

var array = [];

Also:

var object = new Object();

is similar to:

var object = {};

You also can combine them:

var objectArray = [{}, {}, {}];

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);

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

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.

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.

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

If you want to add object o inside inside n like that :

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


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

let dataArray = [{'id':1,'code':'ABC'},{'id':1,'code':'ABC'},{'id':2,'code':'ABC'}]

    let obj = {};
dataArray.forEach(task => {
task.id in obj ? obj[task.employee_id].push(task):
obj = {
...obj,
[task.employee_id]: [task],
}
});