Read SharePoint Service using JQuery

I had spent a day to know that soap response can be read at the event complete but not success.
In success event soapresponse(data.responseXML) is always empty. I'm not sure if its a sepcial case with soap.

Below function of Jquery retrieves the SocialTag count of a specific URL from all users.
Complete event triggers all the time after the service call resulting in success or error. So i used a flag based on which i can get to know if the service call is success or error.

function GetLikeCountFromService(domId, url) {

var tagName = "I like it";

var queryStatus = true;

var soapEnv =

"<soap:Envelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/'>\

<soap:Body> \

<GetTagTermsOnUrl xmlns='http://microsoft.com/webservices/SharePointPortalServer/SocialDataService'>\

<url>" + url + "</url>\

<maximumItemsToReturn>'100</maximumItemsToReturn> \

</GetTagTermsOnUrl> \

</soap:Body> \

</soap:Envelope>";

$.ajax({

url: '/_vti_bin/socialdataservice.asmx',

type: 'POST',

dataType: "xml",

data: soapEnv,

complete: function (data) {

//process only if the query is success

if (queryStatus) {

var likeCount = 0;

$(data.responseXML).find("SocialTermDetail").each(function () {

var term = $(this).find("Term").find("Name").text();

//alert($(this).find("Term").find("Name").text());

if (term == tagName) {

likeCount = $(this).find("Count").text();

// set the like count

$(domId).text(likeCount);

return;

}

});

,

error: function (all, textStatus, errorThrown) { queryStatus = false; alert(errorThrown); },

contentType: "text/xml; charset=\"utf-8\""

});

}

JQuery made life easy with flexible API. I have implemented another function similar to it that will like a URL, in sharepoint terms tagging a url with "I Like It". As a combination this will work as similar to the Social Like feature in Facebook.