Form not validating

And when the page loads, the Java Script code will be executed (the user will see an alert box).This is just a simple and harmless example how the PHP_SELF variable can be exploited.

If it has not been submitted, skip the validation and display a blank form.Proper validation of form data is important to protect your form from hackers and spammers!The HTML form we will be working at in these chapters, contains various input fields: required and optional text fields, radio buttons, and a submit button: The validation rules for the form above are as follows: This code adds a script tag and an alert command.The next step is to make input fields required and create error messages if needed. You can define a validation declaratively by selecting a validation method.

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