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.
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.
a is an array, so you can use push. [] is the array literal syntax, {} is the object literal syntax.
You should use Array.push().
var myObject = {
myArrayOfObjects: []
};
var newObject = {
1: '1',
2: '2'
};
myObject.myArrayOfObjects.push(newObject);
That's not a "JSON object". There isn't even any such thing. It's a Javascript object.
It's not working as you expect as you are not adding an item to the array, you are replacing the last item.
Just use the push method to add an item at the end of the array:
First.a.push(a);
JavaScript Object Notation. a JSON object (an object that uses JavaScript Object Notation as defined at json.org) uses the literal syntax: {}, a JSON array uses the literal syntax: []. In other languages it may need to be encoded as a string, but in JavaScript, it's simply the common syntax for instantiating objects/arrays, although it can also be stored in a string format.
jqueryandjson, as neither is at all relevant to this question, and addedjavascript.