Uncaught TypeError: data.push is not a function

Question

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

Answer 1

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 = [{}, {}, {}];