1, applet development: including the basic concept and principle of applet, applet architecture and design, applet life cycle and operation mechanism.
2. Applet functions: including the functional characteristics of applets, user interface and interaction design, data management and storage, main functional modules, etc.
3. Application of applets: including applications of applets in various fields, applications of applets in enterprises, applications in finance and other fields, market prospects and development trends of applets.