Conversion between JSON objects and strings

For example, if I have two variables, I want to convert a to a string and convert B to a JSON object:

Var a = {"name": "tom", "sex": "male", "age": "24 "};

Var B = '{"name": "Mike", "sex": "female", "age": "29 "}';
Advanced browsers such as Firefox, chrome, opera, safari, ie9, and ie8 can directly use the stringify () and parse () Methods of JSON objects.
JSON. stringify (obj) converts JSON into a string. JSON. parse (string) converts a string to JSON format;
The preceding conversions can be written as follows:

Var a = {"name": "tom", "sex": "male", "age": "24 "};

Var B = '{"name": "Mike", "sex": "female", "age": "29 "}';

Var aToStr = JSON. stringify ();

Var bToObj = JSON. parse (B );

Alert (typeof (aToStr); // string

Alert (typeof (bToObj); // object
JSON. stringify ()
Ie8 (compatible mode), ie7 and ie6 do not have JSON objects, but http://www.json.org/with A json.js, this example of ie8 (compatible mode), ie7 and ie6 can support JSON objects and their stringify () and parse () methods; you can.
Ie8 (compatible mode), ie7 and ie6 can use eval () to convert strings into JSON objects,

Var c = '{"name": "Mike", "sex": "female", "age": "29 "}';
Var cToObj = eval ("(" + c + ")");
Alert (typeof (cToObj ));

JQuery also provides the JSON format conversion method jQuery. parseJSON (json). It accepts a standard JSON string and returns the parsed JavaScript (JSON) object. If you are interested, you can encapsulate a jQuery extension. jQuery. stringifyJSON (obj) converts JSON into a string.

Source: http://www.css88.com/archives/3919