1. A system for providing real-time validation of text input fields in a Web page comprising: a validation-enhanced text input element configured to contain an attribute for a validation expression for a text field in a rendered Web page, wherein the validation-enhanced text input element is contained within a source code document corresponding to the rendered Web page; and an input text validator configured to validate a user-entered character of the text field against the validation expression in real-time and visually indicate invalid user-entered characters.