Answers for "function(response) ajax"

ajax exmaple\

$.ajax({
    url:'your url',
    type: 'POST',  // http method
    data: { myData: 'This is my data.' },  // data to submit
    success: function (data, status, xhr) { // after success your get data
        $('p').append('status: ' + status + ', data: ' + data);
    },
    error: function (jqXhr, textStatus, errorMessage) { // if any error come then 
            $('p').append('Error' + errorMessage);
    }
});

ajax syntax in javascript

var id = empid;

$.ajax({
    type: "POST",
    url: "../Webservices/EmployeeService.asmx/GetEmployeeOrders",
    data: "{empid: " + empid + "}",
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function(result){
        alert(result.d);
        console.log(result);
    }
});

Call the web api from $.ajax() function.

1- Calling the web api method without parameter
•	If  you do not have parameter in your web API method then you no need to pass the data parameter inside AJAX function.
•	The URL parameter of ajax function must match with the Route attribute of web api method.

o	Your web api controller action method.
       
       [HttpGet]
        [Route("student/Get")]
        public IEnumerable<string> Get()
        {
            return new string[] { "student1", "student2" };
        }

o	Your ajax function
$('#btnBindDropDown').on('click', function () {
                $('#btnBindDropDown').click(function () {
                    $.ajax({
                        type: 'GET',
                        url: 'student/Get',
                        contentType: 'application/json; charset=utf-8',
                        dataType: 'json',
                        success: function (data) {
                            alert('data is ' + data);
                        },
                        error: function () {
                            alert("INSIDE FAILURE");
                        }
                    });
                });
                
            });

2-	Now calling the web api method with  parameter


o	Your web api controller action method.

 [HttpGet]
        [Route("student/GetWithId")]
        public int Get(int Id)
        {
            return Id;
        }

o	Your ajax function

•	The Id property must match with web api method parameter.


$.ajax({
                        type: 'GET',
                        url: 'student/GetWithId',
                        data: { Id: 101 },
                        contentType: 'application/json; charset=utf-8',
                        dataType: 'json',
                        success: function (data) {
                            alert('data is ' + data);
                        },
                        error: function () {
                            alert("INSIDE FAILURE");
                        }
                    });

3-	calling the web api method by passing object 

o	Your web api controller action method.

 [HttpPost]
        [Route("api/student/names1")]
        public Employee GetEmployee(Employee employee)
        {
            employee.Id = 101;
            employee.Name = "Kaushal";
            return employee; 
  }

o	Your ajax function
•	The object name ‘employee’ must match with the web api method parameter
•	The URL name can be anything , But both should match.
i.e  Route attribute of web api method and URL parameter of ajax function.
•	If you are passing object then you will use JSON.stringfy function.
•	If webApi method is not returning anything then the parameter  dataType: 'json', 
Is optinal. This parameter is required if webapi method is returning something and you want to do something with the returned data.

$('#btnBindDropDown').click(function ()
            {
                var employee = { Id: 101, Name: "Love singh" };  
                    $.ajax({
                        type: 'POST',
                        url: 'api/student/names1',
                        data: JSON.stringify(employee),
                        contentType: 'application/json; charset=utf-8',
                        dataType: 'json',
                        success: function (data) {
                            alert('data is ' + data);
                        },
                        error: function () {
                            alert("INSIDE FAILURE");
                        }
                    });
                
            });

Call the web api from $.ajax() function.

BY LOVE
1- Calling the web api method without parameter
•	If  you do not have parameter in your web API method then you no need to pass the data parameter inside AJAX function.
•	The URL parameter of ajax function must match with the Route attribute of web api method.

o	Your web api controller action method.
       
       [HttpGet]
        [Route("student/Get")]
        public IEnumerable<string> Get()
        {
            return new string[] { "student1", "student2" };
        }

o	Your ajax function
$('#btnBindDropDown').on('click', function () {
                $('#btnBindDropDown').click(function () {
                    $.ajax({
                        type: 'GET',
                        url: 'student/Get',
                        contentType: 'application/json; charset=utf-8',
                        dataType: 'json',
                        success: function (data) {
                            alert('data is ' + data);
                        },
                        error: function () {
                            alert("INSIDE FAILURE");
                        }
                    });
                });
                
            });

2-	Now calling the web api method with  parameter


o	Your web api controller action method.

 [HttpGet]
        [Route("student/GetWithId")]
        public int Get(int Id)
        {
            return Id;
        }

o	Your ajax function

•	The Id property must match with web api method parameter.


$.ajax({
                        type: 'GET',
                        url: 'student/GetWithId',
                        data: { Id: 101 },
                        contentType: 'application/json; charset=utf-8',
                        dataType: 'json',
                        success: function (data) {
                            alert('data is ' + data);
                        },
                        error: function () {
                            alert("INSIDE FAILURE");
                        }
                    });

3-	calling the web api method by passing object 

o	Your web api controller action method.

 [HttpPost]
        [Route("api/student/names1")]
        public Employee GetEmployee(Employee employee)
        {
            employee.Id = 101;
            employee.Name = "Kaushal";
            return employee; 
  }

o	Your ajax function
•	The object name ‘employee’ must match with the web api method parameter
•	The URL name can be anything , But both should match.
i.e  Route attribute of web api method and URL parameter of ajax function.
•	If you are passing object then you will use JSON.stringfy function.
•	If webApi method is not returning anything then the parameter  dataType: 'json', 
Is optinal. This parameter is required if webapi method is returning something and you want to do something with the returned data.

$('#btnBindDropDown').click(function ()
            {
                var employee = { Id: 101, Name: "Love singh" };  
                    $.ajax({
                        type: 'POST',
                        url: 'api/student/names1',
                        data: JSON.stringify(employee),
                        contentType: 'application/json; charset=utf-8',
                        dataType: 'json',
                        success: function (data) {
                            alert('data is ' + data);
                        },
                        error: function () {
                            alert("INSIDE FAILURE");
                        }
                    });
                
            });

call ajax

//I use blockUI for loading...
$.blockUI({ message: '<h3>Please wait a moment...</h3>' });    
$.ajax({
    type: "POST",
    url: '@Url.Action("ExportExcel","YourController")', //call your controller and action
    contentType: "application/json; charset=utf-8",
    dataType: "json",
}).done(function (data) {
    //console.log(data.result);
    $.unblockUI();

    //get the file name for download
    if (data.fileName != "") {
        //use window.location.href for redirect to download action for download the file
        window.location.href = "@Url.RouteUrl(new 
            { Controller = "YourController", Action = "Download"})/?file=" + data.fileName;
    }
});