liferay auto_filed

new Liferay.AutoFields(
            {
                contentBox: webFields,
                fieldIndexes: '<portlet:namespace />formFieldsIndexes',
                sortable: true,
                sortableHandle: '.field-label',
                url: '<%=editFieldURL%>',
                on: {
                        'delete': function(event) {
                            alert('Field has been deleted');
                        }
                }
            }
        ).render();