Asp.net TextBox First Letter Capital using JQuery

Asp.net TextBox First Letter Capital using JQuery

<script type=”text/javascript”>
$(document).ready(function () {
//”txtFirstName” is textbox id
$(‘input[id$=txtFirstName]’).keyup(function (evt) {
var txt = $(this).val();
$(this).val(txt.replace(/^(.)|\s(.)/g, function ($1) { return $1.toUpperCase(); }));
});
});