javascript - In JQuery why one of ajax request is working while other isn't? -

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i developing application in have call multiple ajax requests. sending $.get , $.post ajax requests working fine tried give shot common $.ajax request.the problem $.ajax not working, below piece of code

//get request $.get works             $.get("/requestcont/task2", function (data) { alert(data); });  //common ajax request below don't work              $.ajax({                     url: "/requestcont/task2",                     type: "get",                     datatype: "json",                     success:function(data)                     {                         //processing json data here                     },                     failure:function(data)                     {                         //handling error here                     }                  });

i using asp.net mvc , actual code haven't wrote here piece of code demonstrate works or not. action in controller requestcont

public actionresult task2()     {         if (request.isajaxrequest())         {             return json(new { msg = "data retrieved" });         }         else         {             return null;         }     }

any thoughts on that. want retrieve json data !. doing wrong or ? 1 me out !. !!.

you sending json data in wrong format backend.

important: of jquery 1.4, if json file contains syntax error, request fail silently. avoid frequent hand-editing of json data reason. json data-interchange format syntax rules stricter of javascript's object literal notation. example, strings represented in json, whether properties or values, must enclosed in double-quotes. details on json format, see http://json.org/.

source:

get json jquery reference

check similar question

jquery $.ajax request of datatype json not retrieve data php script


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