javascript - Form post warning message after upgrading jquery -

i have upgraded jquery 1.10.2. using jquery migrate , having warning message "jquery.parsejson requires valid json string"

i have not understood how can correct that. can me out best solution of how can remove warning message

the javascript follows:

 function search() {          $.ajax({             cache: false,             contenttype: "application/json; charset=utf-8",             datatype: "html",             url: "@url.action("search")",             data:  json.stringify({mymodel: $("#datefrom").val()}),             success: function (data)             {                 $("#newdiv").html(data);             },             error: function (request, status, error)             {                   displayerror(parseerrorfromresponse(request.responsetext, "unknown error"), true);             }         });   } 

in controller:

 public partialviewresult search(mymodel mymodel)     {         return partialview("searchresult", mymodel);     } 

parseerrorfromresponse:

function parseerrorfromresponse(responsetext, defaulterror) {     var text = responsetext.replace("<title>", "titlestart");            var startindex = text.indexof("titlestart");     var endindex = text.indexof("titleend");     return (startindex == -1 || endindex == -1) ? defaulterror : text.substring(startindex + 10, endindex); } 

you need send data json.

where have data: $("#datefrom").val(), replace data: json.stringify({$("#datefrom").val()}).

edit: may need send json.stringify({(mymodel: $("#datefrom").val()}).