How can a uniform interface be used to validate forms?

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A uniform interface can be used to validate forms by using a set of rules that are applied consistently to all forms. This can be done by:

1. Defining a set of validation rules: A set of validation rules should be defined that will be used consistently across all forms. This should include rules that will be used to validate individual fields, as well as rules that will be applied to the form as a whole.

2. Creating a validation engine: A validation engine can be created that will take the user's input and apply the defined validation rules to each field. The validation engine should be able to handle different types of input, such as text, numbers, and dates.

3. Displaying error messages: If the user input fails to meet the specified validation rules, the validation engine should display error messages that are consistent across all forms. These error messages should clearly indicate what the user needs to do in order to correct the error.

4. Providing feedback: The validation engine should provide feedback to the user as they are filling out the form. For example, it should indicate when a field is required or when a particular input format is expected.

By using a uniform interface to validate forms, users will have a consistent experience across all forms. This will reduce confusion and increase the likelihood that the user will successfully complete the form.