parse json jquery

1var obj = JSON.parse('{ "name":"John", "age":30, "city":"New York"}');

1var obj = jQuery.parseJSON( '{ "name": "John" }' );
2alert( obj.name === "John" );

1var jsonPerson = '{"first_name":"billy", "age":23}';
2var personObject = JSON.parse(jsonPerson); //parse json string into JS object

1The JSON.parse() method parses a JSON string, constructing the JavaScript value or object described by the string. An optional reviver function can be provided to perform a transformation on the resulting object before it is returned.
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