【Journey of HarmonyOS Next】Developing with ArkTS (3) -> JS-Compatible Web Development (3)

The application lifecycle consists of application lifecycle functions and page lifecycle functions. In the app.js file, developers can define application lifecycle functions. Page lifecycle functions can be defined in the page JS file, and the order of the lifecycle APIs is specific. Resource qualifiers are used to characterize application scenarios or device characteristics, and they are connected by hyphens. The naming requirements for resource qualifiers include the order of qualifiers, concatenation, and scope of values. The rules for matching qualifiers to device status prioritize MCC and MNC, landscape and portrait, dark mode, device type, and screen density. Resource files can be referenced in JS modules using the $r syntax. The development framework supports multi-language capabilities, allowing developers to switch between languages without developing multiple versions. Resource files are used to store resource content in multiple languages, and the naming convention is language[-script-region].json. The content format of the resource file includes strings and files, and different languages have different matching rules for singular and plural.