How to protect HTML form from blank submission

Question

Basically I\'m using this tutorial: HTML FORM

Everything is working as it should but one flow I\'ve found is that everyone can see the URL for your

Answer 1

Form blank submission you can use java-script validation or jquery validation validation or you can also use php validation to avoid blank form submission.

core js validation

simple example:

   var x = document.forms["myForm"]["fname"].value;
   if (x == "") {
      alert("Name must be filled out");
      return false;
   }

jquery validation

validation library https://jqueryvalidation.org/documentation/

example:

$("#myform").validate({
     submitHandler: function(form) {
     // some other code
     // maybe disabling submit button
     // then:
     $(form).submit();
   }
  });

I hope it helps.