Power Form Validation is class which helps a programmer to validate form inputs just in few lines of code. This class can help control whether a field is empty, whether a component is selected, whether the values of two components are the same, whether a text entry value consists only of letters, whether a value was changed from a given value, and whether a value is longer than or shorter than or equal to a given value. The class can also control how many components are not selected or how many of them have no value entered. Email addresses can be validated with regular expressions.
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