# JS API Differences

- [Ability framework](js-apidiff-ability.md)
- [Account subsystem](js-apidiff-account.md)
- [Application subsystem](js-apidiff-application.md)
- [ArkUI development framework](js-apidiff-arkui.md)
- [Power management subsystem](js-apidiff-battery.md)
- [Bundle management framework](js-apidiff-bundle.md)
- [Communication subsystem](js-apidiff-communication.md)
- [Compiler and runtime subsystem](js-apidiff-compiler-and-runtime.md)
- [DFX subsystem](js-apidiff-dfx.md)
- [Distributed data management subsystem](js-apidiff-distributed-data.md)
- [File management subsystem](js-apidiff-file-management.md)
- [Misc services subsystem](js-apidiff-misc.md)
- [Multimedia subsystem](js-apidiff-multimedia.md)
- [Common event and notification subsystem](js-apidiff-notification.md)
- [Resource scheduler subsystem](js-apidiff-resource-scheduler.md)
- [Security subsystem](js-apidiff-security.md)
- [Pan-sensor subsystem](js-apidiff-sensor.md)
- [Startup subsystem](js-apidiff-start-up.md)
- [Telephony subsystem](js-apidiff-telephony.md)
- [Test subsystem](js-apidiff-unitest.md)
- [Update subsystem](js-apidiff-update.md)
- [USB subsystem](js-apidiff-usb.md)
- [User IAM subsystem](js-apidiff-user-iam.md)
- [Web subsystem](js-apidiff-web.md)
- [Window manager subsystem](js-apidiff-window.md)