JSON数据访问对象

I have the following JSON returned from an AJAX call:

{"rows":[{"Date":"07/10/2011","Value":1206,"Action":"Drink"},    
{"Date":"07/11/2011","Value":2288,"Action":"Pie"},
{"Date":"07/12/2011","Value":1070,"Action":"Drink"},
{"Date":"07/13/2011","Value":1535,"Action":"Beer"},
{"Date":"07/14/2011","Value":1721,"Action":"Drink"}],
"page":1,"total":1,"records":5}

How can I get values from this result using jQuery?

For instance, I'd like to get data elements for the first row:

json.rows[0].date = 07/10/2011
json.rows[0].value = 1206

?

There are a number of ways to do this, you could use eval() but eval() is generally considered evil, plus JSON is not exactly the same as a defining data in Javascript code. I just googled which reminded me that jquery has a parseJSON function.

Check it out.

http://api.jquery.com/jQuery.parseJSON/

But if you are using jquery for the ajax ( pretty popular ), you can set the dataType to json and this will do it for you.

    $.ajax(
    {
            url: "/map", // should return JSON
            dataType: 'json',
            cache: false,
            data: {},
            success: function(response)
            {
                // response is an object

                alert( response.rows[0].Date );

                cook( response );
            }
    });