How to popup one textbox to another textbox on a button click using jquery

$(document).ready(function () { $('#page-button').click(function () { $('#modal-text').val($('#textbox').val()); $('#textbox').val(""); }); });

<div class="container">
    <!--textbox on main page-->
    <input id="textbox" type="text" />
    <!--the following has been taken and edited from w3schools from Modals-->
    <!-- Trigger the modal with a button -->
    <button id="page-button" type="button" data-toggle="modal" data-target="#myModal">Open Modal</button>

    <!-- Modal -->
    <div class="modal fade" id="myModal" role="dialog">
        <div class="modal-dialog">

            <!-- Modal content-->
            <div class="modal-content">
                <div class="modal-header">
                    <button type="button" class="close" data-dismiss="modal">&times;</button>
                    <h4 class="modal-title">Modal Header</h4>
                </div>
                <div class="modal-body">
                    <!-- The Modal text box-->
                    <input id="modal-text" type="text" />
                </div>
                <div class="modal-footer">
                    <button id="close-button" type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                </div>
            </div>

        </div>
    </div>

</div>

Please refer link for more info.

Passing data from textbox on the page to textbox on popup

I need the same logic in asp.net.