retrieve a variable value from javascript code and pass it to my controller

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hi every i need help about how to retrieve a variable value from javascript code and pass it to my controller, i'm using mvc 5 asp.net and i'm a beginner

Posted 16-Apr-14 16:50pm

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Sandeep Singh Shekhawat 17-Apr-14 0:14am

Can you please more clear this question? Why are you not trying jQuery.ajax() method to call controller action method in url and pass parameter as a "data" property of it.

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Abhinav S · Answer 1 · 2014-04-16T23:23:00

One option is to pass this value via an ajax call (using JQuery).
In Javascript, use this

function getVal(id) {
    $.ajax({
        url: '@Url.Action("Action1", "Controller")',
        type: 'GET',
        dataType: 'json',
        cache: false,
        data: { id: id },
        success: function(person) {
            //Do something
        }
    });
}

In your controller, you will get id -

C#

[HttpGet]
public ActionResult Action1(string id)
{
  //Do something
}

DotNet WeblineIndia · Answer 2 · 2014-04-16T23:39:00

Hi, I think you must first learn 'JavaScript' or 'JQuery'. And also learn AJAX, as it is frequently used in the MVC.

JavaScript

//For fetching the variable value using JavaScript
var a = document.getElementById("variableID").value;

JavaScript

$.ajax({
       url: "/ControllerName/ActionName",
       // a stands for the variable considered above.
       data: {a},
       dataType: "JSON",//You can use other datatype as per your need
       type: "POST",
       error: function (jxr, status, error) {
            HandleAjaxError(jxr, status, error);
       },
       // 'data' will contain the return values of the Action
       success: function (data) {
       var sReturn = data;
       if (sReturn == 1) {
          alert('Your Message');
       }
       else {
          alert('Your Message');
       }
      }
 });

Place below code above the controller action defination, which you will call through AJAX. It specifies that particular action is for 'POST'.

C#

[HttpPost]
public ActionResult ActionName{}
{
}

Samer Aburabie · Answer 3 · 2014-04-16T23:19:00

Solution 1

Elaborate more my friend, seems you need to send data from client side to server side as an AJAX call, when do you want this to happen? on submitting the form or when doing an AJAX call to the server?

Posted 16-Apr-14 23:19pm

Samer Aburabie

retrieve a variable value from javascript code and pass it to my controller

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