vm.$once( event, callback ) Arguments: {String} event {Function} callback

vm.$broadcast( event, […args] ) Arguments: {String} event [...args]

vm.$on( event, callback ) Arguments: {String} event {Function} callback

vm.$dispatch( event, […args] ) Arguments: {String} event [...args]

vm.$off( [event, callback] ) Arguments: {String} [event] {Function} [callback]

vm.$emit( event, […args] ) Arguments: {String} event [...args]