Returns the validations rules for the first selected element or

Adds the specified rules and returns all rules for the first matched element. Requires that the parent form is validated, that is, $( “form” ).validate() is called first or

Removes the specified rules and returns all rules for the first matched element.

There are several ways to specify validation rules.

• Validation methods without parameters can be specified as classes on the element (recommended)
• Validation methods with parameters can be specified as attributes (recommended)
• Both can be specified as metadata using the metadata plugin
• Both can be specified using the rules-option of the validate()-method

When setting, the rules can also contain a messages-object, specifying custom messages for existing or added rules.