Similarly, form data is typically saved in a database on the server.
Because your database contains sensitive information, hackers may attempt to use your form to submit malicious commands to your backend database.
To get started, we'll create an HTML page that include a form with the id "contact". It should contain an label, an input (or textarea), and a span that will contain the error message.
The form in HTML will look like this: tag improves usability.
If you are using a My SQL database, this is called My SQL Injection.
We know that email addresses should include an @ symbol and end with a feasible domain name. Regular expressions are a programming language for parsing text.If you haven't already, make sure that you've included the j Query library on your page: Since the name field is required, we simply need to check whether a value for the input exists.