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Error function called when I parse the parameters using jquery AJAX function to asp.net behind code

This is my aspx page code
function grid(datas)
{
var datass = {datas: datas};
var myJSON = JSON.stringify(datass);
$.ajax({
url: 'EditCustomerBills.aspx/LoadGrid',
method: 'POST',
contentType: 'application/json; charset=utf-8',
dataType: 'json',
data: myJSON,
success: function (data) {
alert("Success");
},
error:function(error){
alert("failed");
}
});
}
and this is my behind code
[WebMethod]
public static string LoadGrid(string datas)
{
//GetCustomerBillDetail(data);
string datass = datas.ToString();
return datass;
}
I'm using code perfectly, but output is failed. I'm struggling for four days. please help me. thank you.

I don't know what is your "myJSON" is . according to me your code should be sometinhg like this.
[System.Web.Services.WebMethod]
public static string GetCurrentTime(string datas)
{
return "Hello " + datas + Environment.NewLine + "The Current Time is: "
+ DateTime.Now.ToString();
}
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js" type="text/javascript"></script>
<script type = "text/javascript">
function ShowCurrentTime() {
$.ajax({
type: "POST",
url: "CS.aspx/GetCurrentTime",
data: '{datas: "Your Data" }', // your data should be here.
contentType: "application/json; charset=utf-8",
dataType: "json",
success: OnSuccess,
failure: function(response) {
alert(response.d);
}
});
}
function OnSuccess(response) {
alert(response.d);
}
</script>
below picture will give you a idea how we can call the server side method.
for more reference please see this.

edit as follows and share with f12 in console output?
error: function (error) {
console.log(error);
}

how to save textbox data in database using javascript json

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js">
$(function () {
$("[id*=btnaddrecords]").bind("click", function () {
var user = {};
user.invoice_no = $("[id*=txtinvoice]").val();
user.sale_description = $("[id*=txtsale]").val();
user.transdate = $("[id*=txttdate]").val();
user.transtype = $("[id*=ddtransaction]").val();
$.ajax({
type: "POST",
url: "Default.aspx/SaveUser",
data: '{user: ' + JSON.stringify(user) + '}',
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (response) {
alert("User has been added successfully.");
window.location.reload();
}
});
return false;
});
});
</script>

There are two main problems in the code you shared:
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js">
$(function () {
A script element can load one script. It can load it from a URL using a src attribute, or it can be embedded a child node. You can't have both at the same time.
You need two script elements.
You should also consider using the current version of jQuery. 1.6.2 is very old.
You say you are sending JSON:
contentType: "application/json; charset=utf-8",
but:
'{user: ' + JSON.stringify(user) + '}'
Will not give you JSON.
You need:
JSON.stringify({ user: user })
This assumes that Default.aspx/SaveUser expects a JSON formatted request in the first place.

still not call with ajax in separate javascript file

I am new in jquery and ajax but my requirement is calling servlet/jsp through ajax using jquery so that my ajax code dosen't work in separate javascript file
Here is my javascript file that I called ajax through jquery :
function insertData(idvalue)
{
var forsplit = idvalue.id.split("_");
var qtsrl = forsplit[2];
var qtno = forsplit[3];
alert(qtsrl);
alert(qtno);
var queryid=idvalue.id;
var qtsrl_id = document.getElementById("qstn_srl_"+qtsrl+"_"+qtno).value;
var qstn_no_id = document.getElementById("qstn_no_"+qtsrl+"_"+qtno).value;
alert(qtsrl_id);
alert(qstn_no_id);
$.ajax(
{
url: "aftermarksave.jsp",
type: "get",
data:{setvalues : queryid},
dataType: "JSON",
success: function(data)
{
alert('Successful :'+data);
},
error: function(data)
{
alert('Not Successful: '+data);
}
});
}
Still not call to jsp page and I tried for Servlet page also that servlet is not called through ajax.

Try Like
$.ajax({
url: "URL",
type: "GET",
contentType: "application/json;charset=utf-8",
data: {setvalues : queryid},
dataType: "json",
success: function (response) {
alert(response);
},
error: function (x, e) {
alert('Failed');
alert(x.responseText);
alert(x.status);
}
});
OR
$.get("URL",function(data,status){
alert("Data: " + data + "\nStatus: " + status);
});

How to redirect an asp.net webform to another webform using javascript?

I have the following script in my asp.net webforms project, and I want to redirect to a new page let's say NewForm.aspx in my project how do i do that?? I've tried the window.location.href but it didn't work. A bit of help would be appreciated, thanks!
<script type="text/javascript">
$(document).ready(function () {
$('#btnSubmit').click(function () {
$.ajax({
type: 'POST',
contentType: 'application/json; charset=utf-8',
url: 'DetailsForm.aspx/InsertMethod',
data: "{'firstname':'" + document.getElementById('firstName').value + "', 'lastname':'" + document.getElementById('lastName').value + "'}",
async: false,
success: function (response) {
$('#firstName').val('');
$('#lastName').val('');
alert("Record saved to database successfully!");
},
error: function ()
{ console.log('there is some error'); }
})
});
});
</script>

$.ajax not calling WebService in ASP.Net

I am trying to call webservice through jQuery but it is not showing any results or errors. My code is:
<script type="text/javascript" language="javascript">
var empId = '<%= Session["UserName"] %>';
</script>
<script type="text/javascript">
alert(empId);
$.ajax({
type: "POST",
dataType: "json",
contentType: "application/json",
url: "ServiceGetUser.asmx/GetEmployee",
data: "{'employeeId': '" + empId + "'}",
success: function (data) {
alert("Employee name: " + data.d);
},
error: function () {
alert("Error calling the web service.");
}
});
</script>
I'm getting a value from session printing it successfully then passing it to the webservice and in return printing name Jane Developer as shown in my webservice code:
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Linq;
namespace MentorMentee
{
/// <summary>
/// Summary description for ServiceGetUser
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
[System.Web.Script.Services.ScriptService]
public class ServiceGetUser : System.Web.Services.WebService
{
[WebMethod]
public string GetEmployee(string employeeId)
{
return "Jane Developer";
}
}
}
what's wrong is going on hopes for your suggestions
Thanks

You can put this in doc ready block:
$(window).load(function(){
$.ajax({
type: "POST",
dataType: "json",
contentType: "application/json",
url: "ServiceGetUser.asmx/GetEmployee",
data: {'employeeId': '<%= Session["UserName"] %>'}, //<-- try it
success: function (data) {
alert("Employee name: " + data.d);
},
error: function () {
alert("Error calling the web service.");
}
});
});

dataType is given as json. Which means that jquery will parse the response received from server into json. But you are returning string in your service. So parse error will be thrown by jQuery.
Try attaching complete(jqXHR jqXHR, String textStatus) callback. And look at textStatus
Try using
<script type="text/javascript" language="javascript">
var empId = '<%= Session["UserName"] %>';
</script>
<script type="text/javascript">
alert(empId);
$.ajax({
type: "POST",
dataType: "json",
contentType: "application/json",
url: "ServiceGetUser.asmx/GetEmployee",
data: "{'employeeId': '" + empId + "'}",
success: function (data) {
alert("Employee name: " + data.d);
},
error: function () {
alert("Error calling the web service.");
} ,
complete: function(xhr, textStatus) {
alert(textStatus);
}
});
</script>

Try this:
<script type="text/javascript" language="javascript">
var empId = '<%= Session["UserName"] %>';
</script>
<script type="text/javascript">
alert(empId);
$.ajax({
type: "POST",
dataType: "json",
contentType: "application/json; charset=utf-8",
url: "ServiceGetUser.asmx/GetEmployee",
data: '{employeeId: "' + $("#<%=employeeId.ClientID%>")[0].value + '" }',
success: function (data) {
alert("Employee name: " + data.d);
},
error: function () {
alert("Error calling the web service.");
}
});
</script>

First try to stringify your json like this
alert(JSON.stringify(data)) then maybe u can find your mistake..