Develop Reference

Model is not attaching with controller in MVC using Ajax call?

I am trying to pass the model from view to controller using ajax AND when I check the value in the JS debugger model has data but it's not binding with controller and the controller model is showing null.
function BulkUpdate()
{
debugger;
var model = #Html.Raw(Json.Encode(Model.tags))
$.ajax({
type: 'GET', //GET
data: JSON.stringify({model}),
url: '#Url.Action("BulkUpdate", "Home")',
contentType: 'application/json; charset=utf-8',
dataType: "json",
success: function (data) {
$('#myModalContent').html(data);
$('#myModal').modal('show');
}
});
}
//and my controller code is
public ActionResult BulkUpdate(List<Tag> tags)
{
ModelAccessor obj1 = new ModelAccessor();
obj1.updatedDatas = new List<UpdatedData>();
foreach (var item in tags)
{
var tag = db.Tags.Where(x => x.Id.Equals(item.Id)).FirstOrDefault();
if (tag.TagValue != item.TagValue)
{
UpdatedData changedRow = new UpdatedData {
OldTagValue=tag.TagValue,
NewTagValue=item.TagValue.Trim()
};
obj1.updatedDatas.Add(changedRow);
}
}
return PartialView("_UpdateConfirmationBulk", obj1);
}

I have a solution.
function BulkUpdate()
{
debugger;
var model = #Html.Raw(Json.Encode(Model.tags))
$.ajax({
type: 'GET', //GET
data: {'tags':JSON.stringify({model})},
url: '#Url.Action("BulkUpdate", "Home")',
contentType: 'application/json; charset=utf-8',
dataType: "json",
success: function (data) {
$('#myModalContent').html(data);
$('#myModal').modal('show');
}
});
}
Try this because your method expects a parameter named tags and this is missing in you ajax call.

Can you try the type by post?
var model = #Html.Raw(Json.Encode(Model.tags))
$.ajax({
type: 'POST', //GET
data: JSON.stringify({model}),
url: '#Url.Action("BulkUpdate", "Home")',
contentType: 'application/json; charset=utf-8',
dataType: "json",
success: function (data) {
$('#myModalContent').html(data);
$('#myModal').modal('show');
}
});

reusable ajax and javascript function in CSHTML(RAZOR)

Im new in js and razor,part of my code should be repeated and this imposed more lines of code to my project,it could be nice if i can make it reusable,for example Ajax,where should i create a ajax to a specific URL to just call it when i need?in a separated razor file?in the following code,i have two click events and my ajax call and url is repeating,i want to get rid of this repeat:
function seriesClick(e) {
var _clicketBarChart = e.series.categoryField;
$.ajax({
dataType: "json",
type: "POST",
url: "#Url.Action("faultstatistics","Dashbrd")",
contentType: "application/json; charset=utf-8",
data: JSON.stringify({ "name": _clicketBarChart }),
success: function (result) {
faultstatChart(result);
}
});
function changeEvent(e) {
var _clicketCellGrid = e.categoryCell;
$.ajax({
dataType: "json",
type: "POST",
url: "#Url.Action("faultstatistics","Dashbrd")",
contentType: "application/json; charset=utf-8",
data: JSON.stringify({"name": _clicketCellGrid }),
success: function (result) {
faultstatChart(result);
}
});
}

You have to create single method that can handle two situations, please refer to this example (based on your):
var ajaxHandler = function(targetName) {
$.ajax({
dataType: "json",
type: "POST",
url: "#Url.Action("faultstatistics","Dashbrd")",
contentType: "application/json; charset=utf-8",
data: JSON.stringify({"name": _clicketCellGrid }),
success: function (result) {
faultstatChart(result);
}
});
}
var seriesClick = function(e) {
var targetName = e.series.categoryField;
ajaxHandler(targetName);
}
var changeEvent = function(e) {
var targetName = e.categoryCell;
ajaxHandler(targetName);
}

Ajax method to a webmethod in asmx is not firing

I have a strange problem with the below AJAX jQuery method to call a webmethod in an asmx service. It's not firing when I try to call it, but the moment I uncomment any of the alert in code to debug, it works all of sudden.
It confuses me, what would be the problem? Am I missing something here..
Code:
var endXsession = function() {
var fwdURL = "";
$.ajax({
type: "POST",
url: "Session.asmx/RemoveSession",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(msge) {
//alert(msge.d);
fwdURL = msge.d;
},
error: function(response) {
//alert(response.responseText);
fwdURL = response.responseText;
}
});
//alert(fwdURL);
return fwdURL;
};

response.responseText is undefined ... it's response.statusText ..
function endXsession() {
var fwdURL = "";
$.ajax({
type: "POST",
url: "Session.asmx/RemoveSession",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msge) {
// alert(msge.d);
fwdURL = msge.d;
}
,
error: function (response) {
// alert(response.statusText);
fwdURL = response.statusText;
}
});
// alert(fwdURL);
return fwdURL;
}
console.log(endXsession());

How to get return value in a function with inside Ajax call - JQuery

this may sound very easy to few of you, but i am not able to figure out why I am not able to get the return value, even after chceking many posts :(
function getMessageCount() {
var count;
$.ajax({
type: "POST",
url: "http://localhost:43390" + "/services/DiscussionWidgetService.asmx/GetMessageCount",
dataType: "json",
contentType: "application/json; charset=utf-8",
success: function (data) {
count = data.d;
} //success
});
return count;
}
Now if I call var count = getMessageCount();
it gives me undefinted :(
while inside the method count is coming correct, i.e. service is working fine.

I agree with the first line by ahren that
'That's because the $.ajax() call is asynchronous.'
you could try adding a setting - async:false
which is true by default. This makes the call synchronous.
you can edit your code as :
function getMessageCount() {
var count;
$.ajax({
type: "POST",
url: "http://localhost:43390" + "/services/DiscussionWidgetService.asmx/GetMessageCount",
dataType: "json",
async:false,
contentType: "application/json; charset=utf-8",
success: function (data) {
count = data.d;
} //success
});
return count;
}

That's because the $.ajax() call is asynchronous.
If you edit your code to something like:
function getMessageCount(callback) {
var count;
$.ajax({
type: "POST",
url: "http://localhost:43390" + "/services/DiscussionWidgetService.asmx/GetMessageCount",
dataType: "json",
contentType: "application/json; charset=utf-8",
success: function (data) {
count = data.d;
if(typeof callback === "function") callback(count);
} //success
});
}
Then when you call it:
getMessageCount(function(count){
console.log(count);
});

use a callback:
call function like:
getMessageCount(function(result) {
//result is what you put in the callback. Count in your case
});
and the other like:
function getMessageCount(callback) {
var count;
$.ajax({
type: "POST",
url: "http://localhost:43390" + "/services/DiscussionWidgetService.asmx/GetMessageCount",
dataType: "json",
contentType: "application/json; charset=utf-8",
success: function (data) {
count = data.d;
if (callback) {
callback(count);
}
} //success
});
}

Why you don't just pass it to a function?
function getMessageCount() {
var count;
$.ajax({
type: "POST",
url: "http://localhost:43390" + "/services/DiscussionWidgetService.asmx/GetMessageCount",
dataType: "json",
contentType: "application/json; charset=utf-8",
success: function (data) {
count = data.d;
countMessages(count);
} //success
});
}
function countMessages(counted) {var counted = counted; console.log(counted);}

function ajax_call(url,data){
return $.ajax({ type: "POST",
url: url,
data: data,
async:false,
success: function(status){
}
}).responseText;
}
Now you will get the response text from server side via ajax call

JSON.Parse causes error in javascript

I'm having some problems with JSON.Parse in my code and I cant find the reason of this I have a function which call two ajax functions, one on the start and another on the success function . Its working fine but when I'm try to parse the second one response the code breaks without giving any error and the real mystery is JSON.parse(object); dosent give any problem but when I use a variable to store the result like this var list =JSON.parse(object); my code broke and I dont what is the reason behind this my current code is given below
function getData()
{
$.ajax({
type: "POST",
url: "MyPage.aspx/GetData",
data: JSON.stringify({ data: data})
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (response) {
var result = JSON.parse(response.d);
var temp = 0;
for (var i = 0; i < result.length; i++) {
if (result[i].data > 1) {
var subList = JSON.parsegetFullData (result[i].id));
}
}
});
}
function getFullData (id) {
var sublist;
$.ajax({
type: "POST",
url: "MyPage.aspx/GetData2",
data: JSON.stringify({ id: id }),
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (response) {
return response.d;
}
});
}
any thought will help a lot

When you use $.ajax with dataType:"json", the response is already parsed for you. And there doesn't seem to be a reason to try to parse response.d.
Simply use
$.ajax({
type: "POST",
url: "MyPage.aspx/GetData",
data: JSON.stringify({ data: data})
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (results) {
for (var i = 0; i < results.length; i++) {
console.log(results[i].id, results[i].LastName);