jQuery Validation example - Add rules to spesific class

jquery_validation.html

<script type="text/javascript">
$( document ).ready(function() {
	$( "#elan_form" ).validate({
	//errorClass: '',
	errorElement: "div",
	errorPlacement: function ( error, element ) {
		// Add the `help-block` class to the error element
		error.addClass( "invalid-feedback" );

		if ( element.prop( "type" ) === "checkbox" ) {
			error.insertAfter( element.parent( "label" ) );
		} else {
			error.insertAfter( element );
		}
	},
	highlight: function ( element, errorClass, validClass ) {
		$( element ).parents( ".form-group" ).addClass( "has-error" ).removeClass( "has-success" );
	},
	unhighlight: function (element, errorClass, validClass) {
		$( element ).parents( ".form-group" ).addClass( "has-success" ).removeClass( "has-error" );
	}
});
	$.validator.addMethod("required", $.validator.methods.required,
		"Customer name required");
	jQuery.validator.addClassRules("validation_element", {
		required: true
	});
});
</script>