1# Overview of Other State Management Features 2 3 4In addition to the component state and application state management mentioned in previous topics, ArkTS also provides \@Watch and $$ for state management. 5 6 7- [\@Watch](arkts-watch.md) is used to listen for the changes of state variables. 8 9- [$$operator](arkts-two-way-sync.md) provides a TS variable by-reference to a built-in component so that the variable value and the internal state of that component are kept in sync. 10