Coming soon: A minimalist validation library for client side and server side..

jQuery Validate

License: MIT.

Version: 1.1.2.

Requires: jQuery 1.7+.

To use jQuery Validate you just need to include in your code a version of the jQuery library equal or more recent than 1.7 and a file with the plugin. Click here to download the plugin.

After this, you just need select your form and calling the jQuery.fn.validate method.

See a example:

jQuery('form').validate();

After calling the jQuery.fn.validate method, you can validate your fields using data attributes, that are valid to the HTML5, according to the W3C.

See a example to required field:

<form>
	<input type="text" data-required />
</form>

jQuery Validate supports all fields of the HTML5 and uses WAI-ARIA for accessibility. You can use several attributes to your validations.

Attributes

	<th>Description</th>

	<th width="75px">Default</th>
</tr>

<tr>
	<td>data-conditional</td>

	<td>Accepts one or more indexes separated by spaces from the `conditional` object that should contain a the boolean return function.</td>

	<td></td>
</tr>

<tr>
	<td>data-ignore-case</td>

	<td>Accepts a boolean value to specify if field is case-insensitive.</td>

	<td>true</td>
</tr>

<tr>
	<td>data-mask</td>

	<td>Accepts a mask to change the field value to the specified format. The mask should use the character groups of the regular expression passed to the <a href="#data-pattern">`data-pattern`</a> attribute.</td>

	<td>${0}</td>
</tr>

<tr>
	<td>data-pattern</td>

	<td>Accepts a regular expression to test the field value.</td>

	<td>/(?:)/</td>
</tr>

<tr>
	<td>data-prepare</td>

	<td>Accepts a index from the `prepare` object that should contain a function to receive the field value and returns a new value treated.</td>

	<td></td>
</tr>

<tr>
	<td>data-required</td>

	<td>Accepts a boolean value to specify if field is required.</td>

	<td>false</td>
</tr>

<tr>
	<td>data-trim</td>

	<td>Accepts a boolean value. If true, removes the spaces from the ends in the field value. (The field value is not changed)</td>

	<td>false</td>
</tr>

<tr>
	<td>data-validate</td>

	<td>You can use the `data-validate` to calling extensions.</td>

	<td></td>
</tr>

Parameters

	<th>Description</th>

	<th width="75px">Default</th>
</tr>

<tr>
	<td>conditional</td>

	<td>Accepts a object to store functions from validation.</td>

	<td></td>
</tr>

<tr>
	<td>filter</td>

	<td>Accepts a selector string or function to filter the validated fields.</td>

	<td>*</td>
</tr>

<tr>
	<td>nameSpace</td>

	<td>A namespace used in all delegates events.</td>

	<td>validate</td>
</tr>

<tr>
	<td>onBlur</td>

	<td>Accepts a boolean value. If true, triggers the validation when blur the field.</td>

	<td>false</td>
</tr>

<tr>
	<td>onChange</td>

	<td>Accepts a boolean value. If true, triggers the validation when change the field value.</td>

	<td>false</td>
</tr>

<tr>
	<td>onKeyup</td>

	<td>Accepts a boolean value. If true, triggers the validation when press any key.</td>

	<td>false</td>
</tr>

<tr>
	<td>onSubmit</td>

	<td>Accepts a boolean value. If true, triggers the validation when submit the form.</td>

	<td>true</td>
</tr>

<tr>
	<td>prepare</td>

	<td>Accepts a object to store functions to prepare the field values.</td>

	<td></td>
</tr>

<tr>
	<td>sendForm</td>

	<td>Accepts a boolean value. If false, prevents submit the form (Useful to submit forms via <a href="http://api.jquery.com/jQuery.ajax/" target="_blank">AJAX</a>).</td>

	<td>true</td>
</tr>

<tr>
	<td>waiAria</td>

	<td>Accepts a boolean value. If false, disables <a href="http://www.w3.org/WAI/PF/aria/" target="_blank">WAI-ARIA</a>.</td>

	<td>true</td>
</tr>

Callbacks

	<th>Description</th>
</tr>

<tr>
	<td>valid</td>

	<td>Accepts a function to be calling when form is valid. The context (`this`) is the current verified form and the parameters are respectively `event` and `options`.</td>
</tr>

<tr>
	<td>invalid</td>

	<td>Accepts a function to be calling when form is invalid. The context (`this`) is the current verified form and the parameters are respectively `event` and `options`.</td>
</tr>

<tr>
	<td>eachField</td>

	<td>Accepts a function to be calling to each field. The context (`this`) is the current verified field and the parameters are respectively `event`, `status` and `options`.</td>
</tr>

<tr>
	<td>eachInvalidField</td>

	<td>Accepts a function to be calling when field is invalid. The context (`this`) is the current verified field and the parameters are respectively `event`, `status` and `options`.</td>
</tr>

<tr>
	<td>eachValidField</td>

	<td>Accepts a function to be calling when field is valid. The context (`this`) is the current verified field and the parameters are respectively `event`, `status` and `options`.</td>
</tr>

Removing validation

You can remove validation of a form using the jQuery.fn.validateDestroy method.

Example:

jQuery('form').validateDestroy();

Changing the default values of jQuery.fn.validate

You can changes the default values of jQuery.fn.validate using jQuery.validateSetup method.

Example:

jQuery('form').validateSetup({
	sendForm : false,
	onKeyup : true
});

Creating descriptions

You can create descriptions to the field states.

Example:

<form>
	<input type="text" data-describedby="messages" data-description="test" />

	<span id="messages"></span>
</form>

$('form').validate({
	description : {
		test : {
			required : '<div class="error">Required</div>',
			pattern : '<div class="error">Pattern</div>',
			conditional : '<div class="error">Conditional</div>',
			valid : '<div class="success">Valid</div>'
		}
	}
});

Creating extensions

You can use the jQuery.validateExtend method to extend the validations and calling the extensions with data-validate attribute.

Example:

<form>
	<input type="text" name="age" data-validate="age" />
</form>

jQuery('form').validate();

jQuery.validateExtend({
	age : {
		required : true,
		pattern : /^[0-9]+$/,
		conditional : function(value) {

			return Number(value) > 17;
		}
	}
});