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Validatious 2.0-表单验证JS

官方网站：http://validatious.org/learn/getting_started。
一个方便易用的表单验证JS，话说网上此类JS非常多，这个是无需类库支持的一个，看了下还是比较方便的：

Include script

Download and include the script, preferably just before the closing body tag:

<script src="/design/js/validatious.min.js" type="text/javascript"></script>

Mark forms for validation

Default behaviour is for Validatious to validate all your forms with the class name validate:

<form class="validate" action="#" method="get"><!-- ... --></form>

You can change the class name through v2.Form.autoValidateClass.

Add validators

Adding validators is as simple as adding validator names as class names to input/select/textarea elements:

<input id="email" class="required email" name="email" type="text" />

* Prefix class names through v2.Validator.prefix.
* Available validators.
* Create your own validator.

Reasonable default error messages

Validatious guesses field names from label elements to make default error messages more usable:

<label for="name">Name</label>
<input name="name" id="name" class="required" type="text"/>

...yields "Name is required". So does this:

<label for="name" title="Name">Enter name:</label>
<input name="name" id="name" class="required" type="text"/>

More on field names
etc.,更多内容大家自己在官方看getting_started哈。