Uncaught TypeError:Undefined is not a function
11,906
That's a common javascript error that happens when you try to call a function before it is defined.
For instance, while this code works as expected:
var sayHello= function () {
return 'Hello!'
};
alert(sayHello());
If you reverse the order of the statements the "Uncaught TypeError: undefined is not a function" error will occur:
alert(sayHello());
var sayHello= function () {
return 'Hello!'
};
Hence, I suggest you double check that your scripts are being loaded correctly, and that the findIdpActivities is being properly initialized as a function of the dataService object.
Author by
Arianule
Updated on June 17, 2022Comments
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Arianule almost 2 years
I get the message
Uncaught TypeError:Undefined is not a function
when I try to call a the method in my home controller.Advice perhaps as to why I am getting this message?
findIdpActivities = function (pernr, callback) { restEndPoint = serviceBase + 'Home/FindIdpActivities'; data = "{'perNr':'" + pernr + "'}"; makeJsonDataAjaxCall(callback); }; makeJsonDataAjaxCall = function (callback, obj) { $.ajax({ type: "POST", url: restEndPoint, contentType: "application/json; charset=utf-8", dataType: "json", data: data, success: function (data) { callback(data); } }); };
executing the method upon button click.
$(document).on("click", "input[name=btnViewActivities]", function (e) { e.preventDefault(); var value = $(this).parent().find("input[name=hiddenPerNr]").val(); dataService.findIdpActivities(value); });
and this is the method in the HomeController
[HttpPost] public JsonResult FindIdpActivities(string perNr) { viewModel.GetIdpActivities(perNr); return Json(new { Activities = viewModel.IdpActivities }); }