Using the remote function of jquery validation

Question

I\'m trying to figure out how I can turn this:

$(\'#username\').blur(function(){
    $.post(\'register/isUsernameAvailable\', 
           {\"username\":$(\'#         


        

Answer 1

Jquery Code: 
 rules: {
        email: {
                required: true,
                maxlength: 50,
                email: true,
                 remote: {
        url: "",
        type: "post",
        data: {
          email: function() {
            return $( "#email" ).val();
          }
        }
      }
            },     
    },
     messages: {
      email: {
          required: "E-mailadres",
          email: "Please enter valid email",
          maxlength: "The email name should less than or equal to 50 characters",
          remote: jQuery.validator.format("{0} is already taken.")
        },
    },

PHP Code:
  if($results->num_rows == 0)
    {
        echo "true";  //good to register
    }
    else
    {
        echo "false"; //already registered
    }