Why Form Validation using JavaScript and PHP

Why form validation in JavaScript and PHP is needed when there are pretty much constraints in html itself. For example, type=number, min, max, step and required. Common convention is using empty() in PHP but there is a required in html. Is it redundant or is it really necessary?

https://stackoverflow.com/questions/66937389/why-form-validation-using-javascript-and-php April 04, 2021 at 09:56AM