How to pass value javascript to controler in mvc in asp.net?

hi friend,

below is a samjple of using javascript value to code behind or server side:

<script type="text/javascript">
function abc()
{
  var str="value";
  document.getElementById("Hidden1").value=str;
}

script>
<body>
    <form id="form1" runat="server">
    <div>
        <input id="Hidden1" type="hidden" runat="server" />
        <asp:Button ID="Button1" runat="server" OnClientClick="abc()"  Text="Button" 
            onclick="Button1_Click" />
    div>
    form>
body>

Code Behind:

    protected void Button1_Click(object sender, EventArgs e)
    {
        Response.Write(Hidden1.Value);
    }

But you should pay attention on the order of setting the variable to Hidden control in JavaScript and retrieving the value of Hidden control in aspx page. In the same event handle, it needs execute the Client first. For example, OnClientClick="abc()" will be executed before onclick="Button1_Click". Otherwise, you will get the empty.

Hope you get some idea from Here.

Please mark as answer if it helps you.