Question

first time using json. I currently send a postcode to a php page, and try to store the result as json:

    $("#make_ajax_call").click(function()
    {
        var form_postcode = $("#postcode").val();
        $.ajax({
            type: "POST",
            url: 'mapping-ajax.php',
            data: { postcode: form_postcode},
            success: function(data)
            {
                var jsonObject = data;
                var trimmedpostcode = jsonObject.trimmedpostcode;
                alert(jsonObject);
                alert(jsonObject.trimmedpostcode);
                $('#result').html(data);
                //alert('Load was performed.');
            }
        });
    });

On the other end I use a php function echo json_encode($return_array);

The two alerts give me:

{"trimmedpostcode":"CO125WL","success":true,"outputstring":"CO125WL<br\/>"}

and

Undefined

How come the second one doesn’t return “CO125WL”? Do I need to tell javascript its a json object somehow?

Answer 1

Have you tried:

dataType: 'json'

This is how I pull in my json information in Javascript with an ajax call.