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validate

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资源说明：A simple jQuery plugin to validate forms.

> Coming soon: [A minimalist validation library for client side and server side.](https://github.com/DiegoLopesLima/warble).

# 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:
```javascript
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:
```html

	

```

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

## Attributes


	
		Attribute

		Description

		Default
	

	
		data-conditional

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

		
	

	
		data-ignore-case

		Accepts a boolean value to specify if field is case-insensitive.

		true
	

	
		data-mask

		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 `data-pattern` attribute.

		${0}
	

	
		data-pattern

		Accepts a regular expression to test the field value.

		/(?:)/
	

	
		data-prepare

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

		
	

	
		data-required

		Accepts a boolean value to specify if field is required.

		false
	

	
		data-trim

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

		false
	

	
		data-validate

		You can use the `data-validate` to calling extensions.

		
	


## Parameters


	
		Parameter

		Description

		Default
	

	
		conditional

		Accepts a object to store functions from validation.

		
	

	
		filter

		Accepts a selector string or function to filter the validated fields.

		*
	

	
		nameSpace

		A namespace used in all delegates events.

		validate
	

	
		onBlur

		Accepts a boolean value. If true, triggers the validation when blur the field.

		false
	

	
		onChange

		Accepts a boolean value. If true, triggers the validation when change the field value.

		false
	

	
		onKeyup

		Accepts a boolean value. If true, triggers the validation when press any key.

		false
	

	
		onSubmit

		Accepts a boolean value. If true, triggers the validation when submit the form.

		true
	

	
		prepare

		Accepts a object to store functions to prepare the field values.

		
	

	
		sendForm

		Accepts a boolean value. If false, prevents submit the form (Useful to submit forms via AJAX).

		true
	

	
		waiAria

		Accepts a boolean value. If false, disables WAI-ARIA.

		true
	


## Callbacks


	
		Callback

		Description
	

	
		valid

		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`.
	

	
		invalid

		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`.
	

	
		eachField

		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`.
	

	
		eachInvalidField

		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`.
	

	
		eachValidField

		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`.
	


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

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

## Creating descriptions
You can create descriptions to the field states.

Example:
```html

	

	

```

```javascript
$('form').validate({
	description : {
		test : {
			required : 'Required',
			pattern : 'Pattern',
			conditional : 'Conditional',
			valid : 'Valid'
		}
	}
});
```

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

Example:
```html

	

```

```javascript
jQuery('form').validate();

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

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

Attribute	Description	Default
data-conditional	Accepts one or more indexes separated by spaces from the `conditional` object that should contain a the boolean return function.
data-ignore-case	Accepts a boolean value to specify if field is case-insensitive.	true
data-mask	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 `data-pattern` attribute.	${0}
data-pattern	Accepts a regular expression to test the field value.	/(?:)/
data-prepare	Accepts a index from the `prepare` object that should contain a function to receive the field value and returns a new value treated.
data-required	Accepts a boolean value to specify if field is required.	false
data-trim	Accepts a boolean value. If true, removes the spaces from the ends in the field value. (The field value is not changed)	false
data-validate	You can use the `data-validate` to calling extensions.

Parameter	Description	Default
conditional	Accepts a object to store functions from validation.
filter	Accepts a selector string or function to filter the validated fields.	*
nameSpace	A namespace used in all delegates events.	validate
onBlur	Accepts a boolean value. If true, triggers the validation when blur the field.	false
onChange	Accepts a boolean value. If true, triggers the validation when change the field value.	false
onKeyup	Accepts a boolean value. If true, triggers the validation when press any key.	false
onSubmit	Accepts a boolean value. If true, triggers the validation when submit the form.	true
prepare	Accepts a object to store functions to prepare the field values.
sendForm	Accepts a boolean value. If false, prevents submit the form (Useful to submit forms via AJAX).	true
waiAria	Accepts a boolean value. If false, disables WAI-ARIA.	true

Callback	Description
valid	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`.
invalid	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`.
eachField	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`.
eachInvalidField	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`.
eachValidField	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`.

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