FormManager CSS Validation provides basic functionality for pre-validating user input based on CSS classes set on form elements.

The following classes can be applied to a form element for pre-validation:

yiv-required

Value must not be empty.

yiv-length:[x,y]

String must be at least x characters and at most y characters. At least one of x and y must be specified.

yiv-integer:[x,y]

The integer value must be at least x and at most y. x and y are both optional.

yiv-decimal:[x,y]

The decimal value must be at least x and at most y. Exponents are not allowed. x and y are both optional.

If we ever need to allow exponents, we can use yiv-float.