Answers for "jquery form validation with error message"

jquery validation errorplacement

$(document).ready(function () {
    $('#add_client').validate({
        errorClass: 'validation_errors',
        debug: false,
        rules: {
            client_name: {
                required: true
            },
            client_address: {
                required: true
            },
            client_city: {
                required: true
            }
        },
        errorPlacement: function (error, element) {
            console.log('dd', element.attr("name"))
            if (element.attr("name") == "client_city") {
                error.appendTo("#messageBox");
            } else {
                error.insertAfter(element)
            }
        },
        messages: {
            client_name: {
                required: "The Client name is a required / mandatory field"
            },
            client_address: {
                required: "The Client address is a required / mandatory field"
            },
            client_city: {
                required: "The City is a required / mandatory field"
            },

        },
        submitHandler: () => {
        $('#send_form').on('click', submitFormHandler)
        $('#send_form').trigger('click')
        $('#terms-of-use').removeClass("checked")
        $('#terms').removeClass("checked")
      }
    });
});

form validation using jquery

<script src="https://cdn.jsdelivr.net/jquery.validation/1.16.0/jquery.validate.min.js"></script>
then add javascript code:
$(document).ready(function() {
   $("#form").validate();
});
</script>