1# Overview of Other State Management Features 2<!--Kit: ArkUI--> 3<!--Subsystem: ArkUI--> 4<!--Owner: @jiyujia926--> 5<!--Designer: @s10021109--> 6<!--Tester: @TerryTsao--> 7<!--Adviser: @zhang_yixin13--> 8 9In addition to component-level and application-level state management, ArkTS also provides the following specialized state management features: 10 11- [\@Watch decorator](arkts-watch.md): listens for the changes of state variables. 12 13- [$$ operator](arkts-two-way-sync.md): creates two-way binding between TypeScript variables and built-in component states. 14 15- [\@Track decorator](arkts-track.md): enables property-level updates for class objects. When a property decorated with \@Track changes, only the UI associated with that property is updated. 16 17- [Component freezing](arkts-custom-components-freeze.md): suspends inactive components' state responsiveness. 18