JS Regex GIST

$(document).ready(()=>{
    $.validator.addMethod('nameLen',(value, element)=>{
        return /([^a]{2}$)/g.test(value);
    },"Your Email is not in proper format.... please correct the same......");   
            $("#form1").validate({
                        rules:{
                            inpt:{
                                required: true,
                                nameLen: true
                            },
                            inpt2:{
                                required: true
                            }
                        },
                        messages:{
                                inpt:{
                                    required: "This field is mandatory"
                                },
                                inpt2:{
                                    required: "This field is mandatory"
                                }
                        },
                       errorElement: "span",
                       errorPlacement: (error, element)=>{
                                   if(element.attr("name") =="inpt"){
                                       $(".err").html(error);
                                   }
                                   if(element.attr("name") =="inpt2"){
                                       $(".err2").html(error);
                                   } 
                       }
            });
});