How to get textbox value in jquery

Many time we require the textbox value for calculations or other need. Get textbox value in jquery is very simple just read the following example.

by bilbobaggins

HTML

<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<input type="text" id="txtval" />
<input type="text" id="txtval" />
<input type="password" id="txtval" />
<input type="radio" id="txtval" />
<input type="button" value="Get textbox Value" id="btnval" />

JavaScript

$(document).ready(function(){
		$('#btnval').click(function(){
			$val=$('#txtval').val();
			alert($val);
		});
	});