Question

I am new to JSON and Here is my First JSON Object

var First = {
              "a" : [{}]
            };

I want to add the below object to “a” in “First”

var a = {"1":"One","2":"Two"};

I have tried below code

First.a[First.a.length-1] = a;

It is not working.I assume that there are some syntax mistakes in this. Please help me on this.

Answer 1

it you want to add it, you’re looking for First.a.push(a)
if you want to replace the last element:

First.a[First.a.length-1] = a;

if you want to append a to the last element:

First.a[First.a.length-1]['a'] = a;

or

  First.a[First.a.length-1].a = a;

if it’s none of these, please add the expected json in your question.