Strikethrough selected text JavaScript

Here is code which shows how to strike though the selected text in textbox using JavaScript.

<script type="text/javascript" language="javascript">

    function sendtext(input) {

        var striketext = '';

        var textvar = $('#txtText').val().substr(input.selectionStart, (input.selectionEnd - input.selectionStart));

        $.each(textvar.split(''), function () {

            striketext += '\u0336' + this;

        });

        var result = $('#txtText').val().substr(0, input.selectionStart) + striketext + $('#txtText').val().substr(input.selectionEnd, $('#txtText').val().length);

        $('#txtText1').val(result);

    }

</script>

<h2>Index</h2>

<input id="txtText" type="text">

<input id="txtText1" type="text">

<input type="button" value="click" onclick="sendtext(document.getElementById('txtText'))"/>