How to access JSON object in JavaScript

Below is a JSON string.

    "name": "mkyong",
    "age": 30,
    "address": {
        "streetAddress": "88 8nd Street",
        "city": "New York"
    },
    "phoneNumber": [
            "type": "home",
            "number": "111 111-1111"
        },
            "type": "fax",
            "number": "222 222-2222"

To access the JSON object in JavaScript, parse it with JSON.parse(), and access it via “.” or “[]”.

<script>
       var data = '{"name": "mkyong","age": 30,"address": {"streetAddress": "88 8nd Street","city": "New York"},"phoneNumber": [{"type": "home","number": "111 111-1111"},{"type": "fax","number": "222 222-2222"}]}';
	var json = JSON.parse(data);
	alert(json["name"]); //mkyong
	alert(json.name); //mkyong
	alert(json.address.streetAddress); //88 8nd Street
	alert(json["address"].city); //New York
	alert(json.phoneNumber[0].number); //111 111-1111
	alert(json.phoneNumber[1].type); //fax
	alert(json.phoneNumber.number); //undefined
</script>	

Reference

1. Wikipedia : JSON