<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/charCount.js"></script>

<form id="form" method="post" action="">
<h2>Default Usage</h2>
<div>
<label for="message">Type your message</label>
<textarea id="message1" name="message1"></textarea>
</div>
<h2>Custom Usage</h2>
<div>
<label for="message">Another message (limited to 30, warning at 10)</label>
<textarea id="message2" name="message2"></textarea>
</div>
</form>

<script type="text/javascript">
$(document).ready(function(){
//default usage
$("#message1").charCount();
//custom usage
$("#message2").charCount({
allowed: 30,
warning: 10,
counterText: '剩余字?jǐn)?shù): '
});
});
</script>