CODEWITHSUNDEEP
phpjquery
phpmyadmin2014
phpmyadmin2014

Reputation: 101

Is Jquery enough for Contact Form validation?

I don't want to use any Jquery plugins like Jquery-Validation. I want to use only Jquery to validate Contact Form in my website.

My question is if the only Jquery validation code is enough, or I should add php code. My form has Name, Email, and Message. My concern is the Email field. I validated like below;

   function check_email() {
       var pattern = new RegExp(/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)   ((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-   \uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-  \uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-  \uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i);
   //return pattern.test(emailText);
       if(pattern.test($("#email").val())) {
           $("#email_err_msg").hide();
       } else {
           $("#email_err_msg").html("*Invalid email address.");
            $("#email_err_msg").show();
           err_email = true;
       }

   }

Is this enough, or do I need php code too?

Thanks

Upvotes: 0

Views: 110

Answers (1)

Naftali
Naftali

Reputation: 146310

You always should have backend validation as frontend validation can always be manipulated (or even removed)

There is a golden rule of never trust anything that is submitted from the browser.

Upvotes: 2

Related Questions