javascript - I can't retrieve single list item from SharePoint using JSOM -


i querying sharepoint 2010 list using caml , jsom. query return 1 item when remove while() loop, nothing happens. appreciated.

function retrievelistitems() { var clientcontext = new sp.clientcontext(); var olist = clientcontext.get_web().get_lists().getbytitle('project');       var prjqry = "<view><query><where><eq><fieldref name='tid' /><value type='text'>" + getquerystring('tid') + "</value></eq></where></query><viewfields><fieldref name='title' /><fieldref name='project_x0020_number' /><fieldref name='station_x0020_name' /><fieldref name='visn' /><fieldref name='station_x0020_number' /></viewfields></view>";          var camlquery = new sp.camlquery(); camlquery.set_viewxml(prjqry); this.colllistitem = olist.getitems(camlquery);  clientcontext.load(colllistitem);  clientcontext.executequeryasync(     function.createdelegate(this, this.onquerysucceeded),     function.createdelegate(this, this.onqueryfailed)     ); }  function onquerysucceeded(sender, args) { var listiteminfo = ''; var listitemenumerator = colllistitem.getenumerator();   while (listitemenumerator.movenext()) {  var olistitem = listitemenumerator.get_current();               $('#visn').val(olistitem.get_item('visn'));             $('#projtitle').val(olistitem.get_item('title'));             $('#station').val(olistitem.get_item('station_x0020_number'));             $('#stationname').val(olistitem.get_item('station_x0020_name'));                                                            $('#projnumber').val(olistitem.get_item('project_x0020_number'));    }                }


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