Calling SharePoint webservices like lists.asmx using javascript

function QueryListEx(listGuid, fields, where, orderBy, rowLimit, extractRows)

1. {
2. var a = new ActiveXObject("Microsoft.XMLHTTP");
4. if(a == null) return null;
6. a.Open("POST", GetRootUrl() + "_vti_bin/DspSts.asmx", false);
7. a.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
8. a.setRequestHeader("SOAPAction", "http://schemas.microsoft.com/sharepoint/dsp/queryRequest");
10. var d = ''
11. + "
12. + "xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" "
13. + "xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope\/\">"
14. +" "
15. +" "
16. +" 1.0"
17. +" "
18. +"
19. +" service=\"DspSts\" document=\"content\" method=\"query\">"
20. +" "
21. +" "
22. + ""
23. + "
24. +" xmlns=\"http://schemas.microsoft.com/sharepoint/dsp\">"
25. +" + listGuid + "']\""
26. +" resultContent=\"dataOnly\""
27. +" columnMapping=\"attribute\" resultRoot=\"Rows\" resultRow=\"Row\">"
28. +" + rowLimit + "\">"
29. +" " + fields + ""
30. +" " + where + ""
31. +" " + orderBy + ""
32. +" "
33. +" "
34. +" "
35. + ""
36. + "";
38. a.Send(d);
40. if (a.status != 200)
41. return null;
42. else
43. {
44. if (extractRows)
45. return a.responseXML.selectNodes('//Row');
46. else
47. return a.responseXML;
48. }
49. }

function GetRootUrl()
{
var pathparts = document.location.pathname.split('/');
var url = 'https://' + document.location.hostname + '/' + pathparts[1] + '/';

return url;
}

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