JSFiddle - React, Tailwind, and code Playground

JavaScript

$(document).ready(function(){

    jQuery.validator.addMethod("password", function( value, element ) {
        var result = this.optional(element) || value.length >= 6 && /\d/.test(value) && /[a-z]/i.test(value);
        return result;
    }, "Your password must be at least 6 characters long and contain at least one number and one character.");

    $('#userlogin').validate({
        rules: {
              username: { required: true, minlength: 2 },
              password: { required: true, minlength: 5 },
              c_password: { required: true, equalTo: "#password", minlength: 5 },
              email: { required: true, email:true }
        },
        messages: {
            username: {
                required: "Please enter your username.",
                minlength: jQuery.format("Enter at least {0} characters"),
                remote: jQuery.format("{0} is already in use")         
            },
            password: {
                required: "Please enter your password.",
                minlength: jQuery.format("Enter at least {0} characters"),
                remote: jQuery.format("{0} is already in use")         
            },
            email: {
                email: "Please enter your email address."
            }
            }
        });


    $('#buyerregistration').validate({
        rules: {
          password: { required: true, minlength: 5 }, 
          c_password: { required: true, equalTo: "#password", minlength: 5 },
          secretanswer: { required: true, },
          c_secretanswer: { required: true, equalTo: "#secretanswer" },
          email: { required: true, email: true }
          },
        messages: {
          email: {
            required: "Please enter a valid email address.",
            email: "Please enter a valid email address."
          }
        }
        } ); 
        
    $('#supplierregistration').validate({
        rules: {
          password: { required: true, minlength: 5 }, 
          c_password: {...