Check for valid email example

gistfile1.txt

jQuery(function ($) {
  $( document ).ready(function() {
    $(“.diviclick”).on(“click”, function(){
      event.preventDefault();
      if ($('#email').val().length > 0){
        $(‘#guiarapidaoptin’).submit();
      }else {
        alert('A valid email address is required')
      }
    });
  });
});