The If wanting to use a custom method that handles the displaying/removing of error messages you should use the two methods described above.
Return false to prevent the default behaviour when adding/removing error messages.
This j Query plugin has support for a lot more validation functions, you find them all in the menu to the right.
Read the setup guide if you want to know which configuration options that are available when setting up the validation.
Even though this plugin has a wide range of validation functions it's designed to require as little network traffic as possible.
This is achieved by grouping together validation functions in "modules", making it possible to load only those functions that's needed to validate a particular form.
There are two ways you can give suggestions to the user while the user types.
validator Function - Callback function that validates the input.Should return a boolean telling if the value is considered valid or not.error Message Key - Name of language property that is used in case the value of the input is invalid.error Message - An alternative error message that is used if error Message Key is left with an empty value or isn't defined in the language object.Note that you also can use inline error messages in your form.
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