传递jQuery值作为事件参数

Question

If there is a value being held in a hidden field, how could I access the value using jQuery in a function being called by an onclick event without having to call another function to do it? Essentially, this is what I'm trying to do:

<a href="#" onclick="Update($('#hdnID').val())" >

Answer 1

<p>Type something and click</p>
<br /><br />
<input type="hidden" id="hdnID" value=123 />
<br /><br />
<a href="#" onclick="Update($('#hdnID').val())" >Click me</a>

http://jsfiddle.net/devjit/a4zBQ/

Its actually adeneo's ans, I only changed it to "hidden" and gave it a value