Fixed character limit text box with running feedback - javascript
<p>Is there a simple javascript pattern for showing how many characters left you can use in a fixed character text box?</p>

<p>Say you have a text box and you want them only to use 500 characters, twitter and stack-overflow show how many you have left as you type. I presume you can use jquery and a type event to produce a dynamic running count. </p>

<p>Is there an elegant pattern for this in javascript.</p>
