Javascript code for validating checkbox

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(note that the form method is post in the HTML form).To make it a bit cleaner, we can trim the input to remove any extra space from the beginning and end of the form.The server side form validations help keeping the form submission data consistent.The validations also help in lesser server side errors.For example, you can have an input field that should not be empty, should be less than 25 chars and should be alpha-numeric. In some dynamically programmed pages, it may be required to change the validations in the form at run time.

Client-side form validations help in giving immediate feedback to the user.So we have to display the value from the $_POST in the input value attribute.Note that we are using the htmlentities() function to encode any HTML entities like checks whether Round6 was selected.The “validation descriptor” is nothing but a string specifying the type of validation to be performed.Each field in the form can have zero one or more validations. More info & downloads where Do My Validation One() and Do My Validation Two() are custom functions for validation.

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