I'm not explicitly setting a content-type, but Firebug tells me it's text/html . I'll try changing it to application/json.
Erm... I must be doing something else wrong in my script. Just now I just set up a very simple test using both regular $.ajax() and using jquery.form.js's $.ajaxForm() and both work correctly. If anyone's interested, here are both test scripts: bool_json_test.html: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http:// www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml";> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>AJAX JSON Test</title> <script type="text/javascript" src="/scripts/jquery/jquery.js"></ script> <script type="text/javascript" src="/scripts/jquery/jquery.form.js"></ script> </head> <body> <form id="no_submit" name="no_submit" method="get" action=""> <p>Return type: </p> <blockquote> <label> <input type="radio" name="datatype" value="string" id="datatype_0" /> String</label> <br /> <label> <input type="radio" name="datatype" value="integer" id="datatype_1" /> Integer</label> <br /> <label> <input type="radio" name="datatype" value="float" id="datatype_2" /> Float</label> <br /> <label> <input type="radio" name="datatype" value="boolean" id="datatype_3" /> Boolean</label> <br /> <label> <input type="radio" name="datatype" value="null" id="datatype_4" /> Null</label> <br /> </blockquote> <p> <input type="button" name="click_me" id="click_me" value="Click Me" /> </p> </form> <table border="1" cellspacing="0" cellpadding="2"> <tr> <td>Data type returned:</td> <td id="data_type"> </td> </tr> <tr> <td>Value returned:</td> <td id="value"> </td> </tr> </table> <script type="text/ecmascript"> $(function() { $("#click_me").click(function() { $.ajax({ url : 'bool_json_test.ajax.php', dataType : 'json', type : 'GET', data : { type : $("[name=datatype]:checked").val() }, success : function(json) { var text = (json===null) ? "null" : json.toString(); $("#data_type").text(typeof json); $("#value").text(""); $("#value").text(text); } }); }); }); </script> <form id="ajax_form" name="ajax_form" method="get" action="bool_json_test.ajax.php"> <p>Return type: </p> <blockquote> <label> <input type="radio" name="datatype" value="string" id="datatype_5" /> String</label> <br /> <label> <input type="radio" name="datatype" value="integer" id="datatype_6" /> Integer</label> <br /> <label> <input type="radio" name="datatype" value="float" id="datatype_7" /> Float</label> <br /> <label> <input type="radio" name="datatype" value="boolean" id="datatype_8" /> Boolean</label> <br /> <label> <input type="radio" name="datatype" value="null" id="datatype_9" /> Null</label> <br /> </blockquote> <p> <input type="submit" name="click_me2" id="click_me2" value="Click Me" /> </p> </form> <table border="1" cellspacing="0" cellpadding="2"> <tr> <td>Data type returned:</td> <td id="data_type2"> </td> </tr> <tr> <td>Value returned:</td> <td id="value2"> </td> </tr> </table> <script type="text/ecmascript"> $(function() { $("#ajax_form").ajaxForm({ dataType : 'json', success : function(json) { var text = (json===null) ? "null" : json.toString(); $("#data_type2").text(typeof json); $("#value2").text(""); $("#value2").text(text); } }); }); </script> </body> </html> bool_json_test.ajax.php: <?php $type = @$_GET['type']; if (!$type) { $type = $_GET['datatype']; } $rets = array( 'string' => "Hello World", 'integer' => 5, 'float' => 10.3, 'boolean' => true, 'null' => NULL ); print json_encode($rets[$type]); ?> Thanks, Jamie On Nov 19, 10:19 pm, Michael Geary <m...@mg.to> wrote: > You would normally expect that to work. > > What content-type is your server putting in the header for the JSON data? > That could be throwing it off. > > Also note that a bare primitive value (true, false, null, or a string or > number) is not valid JSON. The only valid JSON is either an object enclosed > in {} or an array enclosed in []. However, this is not what's causing your > problem. jQuery doesn't use a strict JSON parser - it simply evals the JSON > text - so a bare primitive value should work fine if everything else is OK. > > -Mike > > On Thu, Nov 19, 2009 at 11:08 AM, livefree75 <jpittm...@gmail.com> wrote: > > Hi, > > > I'm using the following code on the client side: > > $.ajax({ > > dataType : 'json', > > // other options > > success : function(json_response) { > > console.log(typeof response, response); // Using Firefox's > > firebug > > } > > }); > > > And this PHP code on the server side: > > > <?php > > // php processing code > > $response = some_boolean_value(); > > print json_encode($response); > > ?> > > > Now, using Firebug, I can verify that the actual JSON response coming > > back is indeed either true or false (without the quotes), > > which should evaluate to Javascript boolean true or false. However, > > when I obtain it in the success() method of my $.ajax() call, it comes > > in as a string. (e.g. "true" or "false"). i.e., the console.log() > > call renders: string true > > > Shouldn't it render: boolean true ? > > > Is this a bug? > > Jamie
