$(document).ready(function(){
    $("form").validate({
        rules:{
           naam:{
               required: true,
               minlength: 2
           },//end naam
           email:{
               required: true,
               email: true
           },//end email
           onderwerp:{
               required: true,
               minlength: 2
           },//end onderwerp
           bericht:{
               required: true,
               minlength: 3
           }//end bericht
        },//end rules
        messages: {
            naam: "Verplicht",
            email: "Verplicht",
            onderwerp: "Verplicht",
            bericht: "Verplicht"
        }//end messages
    });
    
});