How to invoke a class in JavaScript within Visual Studio

Question

How to invoke a class in JavaScript within Visual Studio

I have a controller class that retrieves data from the database and returns it within a function. I now need to call this function in JavaScript and store the data in variables for display on a page:

Here is an example of my code: exampleController.cs

namespace iSee.WebApiHse.Controllers
{
    public class expController : StandardController
    {

        public expController(
            first myService,
            ISystemSettings systemSettings,
            IService myExpService)
        {
            _myService = MyService;
            _systemSettings = systemSettings;
            _myExpService = myExpService;
        }

        // GET data
        public ActionResult Myexample(int id)
        {
            var elementIds = _systemSettings.ExpIds; 

            var myElements = CacheService.AllVisibleElements
                                  .Where(x => elementIds.Contains(x.Id)).ToList();

            var container = _kpiContainerService.Find(id);

            var result = _myService.MonthByContainer(myElements, container);
            return AsJson(result);
        }
    }
}

The above code successfully retrieves the data. Now, I have a script file named myExp.js where I intend to use this data. How can I achieve this?

Thank you.

c#javascript .net ajax asp.net-mvc

Answer 1

Answer №1

In order to retrieve and send computed information from the server, it is necessary to perform a $ajax(..) request using jQuery syntax to your controller.

To achieve this, ensure that the controller method you intend to utilize is accessible for HTTP requests.

For more in-depth information, visit:

How to call controller method from javascript

Answer 2

In order to retrieve and send computed information from the server, it is necessary to perform a $ajax(..) request using jQuery syntax to your controller.

To achieve this, ensure that the controller method you intend to utilize is accessible for HTTP requests.

For more in-depth information, visit:

How to call controller method from javascript

Answer 3

Answer №2

If you're considering manipulating your controller in the View using JavaScript, think again. It's not a recommended approach. Instead, pass the Model to the View and work with it directly, or utilize ajax to retrieve json-data.

Answer 4

If you're considering manipulating your controller in the View using JavaScript, think again. It's not a recommended approach. Instead, pass the Model to the View and work with it directly, or utilize ajax to retrieve json-data.

Answer 5

Answer №3

Here is an illustration that utilizes jQuery-ajax to invoke your C# function:

// javascript

var num = 123;

$.ajax({
    url : '/expController/Myexample/',
    type : 'GET',
    data { num : num },
    dataType : 'json', // <-- instruct jQuery to automatically decode the JSON
    success : function(response){
        console.log(response);
    }
});

This script will call your function, providing the num variable as input, and then decipher the JSON into the response object.

To learn about plain Javascript ajax (without jQuery) refer to MDN Ajax.

Answer 6

Here is an illustration that utilizes jQuery-ajax to invoke your C# function:

// javascript

var num = 123;

$.ajax({
    url : '/expController/Myexample/',
    type : 'GET',
    data { num : num },
    dataType : 'json', // <-- instruct jQuery to automatically decode the JSON
    success : function(response){
        console.log(response);
    }
});

This script will call your function, providing the num variable as input, and then decipher the JSON into the response object.

To learn about plain Javascript ajax (without jQuery) refer to MDN Ajax.

Answer 7

Answer №4

To initiate the Action Myexample, you must send a request. This can typically be achieved using AJAX:

In your view, consider including:

function triggerAJaxRequest(idToSend) {
    $.ajax({
        url: '@Url.Action("exp", "Myexample")',
        data: { id : idToSend },
        type: "POST",
        success: function(data) {
           $("#HTMLElement").val(data.YourData);
        }
    });
}

If the AJAX call is successful, the response will be stored in the data variable. I have included an example to demonstrate how you can modify the value of an HTML element with the ID HTMLElement.

To execute the function, simply use:

 triggerAjaxRequest(100);

Answer 8

To initiate the Action Myexample, you must send a request. This can typically be achieved using AJAX:

In your view, consider including:

function triggerAJaxRequest(idToSend) {
    $.ajax({
        url: '@Url.Action("exp", "Myexample")',
        data: { id : idToSend },
        type: "POST",
        success: function(data) {
           $("#HTMLElement").val(data.YourData);
        }
    });
}

If the AJAX call is successful, the response will be stored in the data variable. I have included an example to demonstrate how you can modify the value of an HTML element with the ID HTMLElement.

To execute the function, simply use:

 triggerAjaxRequest(100);

Answer 9

Answer №5

To incorporate the JSON data, store it in a variable and then send it to the designated function in expjs.js. Here is an example:

var jsonData = retrieveDataFromAJAX();
executeJSFunction(jsonData);

The function retrieveDataFromAJAX() is responsible for fetching JSON data from your controller and action.

This should serve as a guide rather than a direct copy-and-paste solution

Answer 10

To incorporate the JSON data, store it in a variable and then send it to the designated function in expjs.js. Here is an example:

var jsonData = retrieveDataFromAJAX();
executeJSFunction(jsonData);

The function retrieveDataFromAJAX() is responsible for fetching JSON data from your controller and action.

This should serve as a guide rather than a direct copy-and-paste solution

How to invoke a class in JavaScript within Visual Studio

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

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