# The Construction of a Digital Agricultural GIS Application Suite
## 2 Design Considerations and Methods
### Implementation Method
#### 2.2.1 Web Component  
The componentization methodology represents an efficient software development strategy, which decomposes complex software systems into multiple independent and reusable components characterized by loose coupling and high reusability [35]. This approach reduces the complexity of software development, thereby enhancing both the efficiency and quality of software development. In recent years, with the advancement of web technologies, the widespread adoption of open-source frameworks based on web components, such as Angular, React, and Vue, has led to a shift in web application systems towards the use of web component-based frameworks. Web componentization encapsulates the view structure, styles, and logical events of web pages into cohesive units. The advantages of using web components include high modularity, scalability, ease of invocation, and the ability to rapidly construct web application systems [36].  
For the design of specific web components, it primarily consists of three parts: data, methods, and events. Among these, data serves as the management and invocation object of the component, constituting the prerequisite for the methods and events to function effectively; methods embodies the logic and specific implementation of the component design, providing the supporting framework for the component's data and events; events represents the external connections of the component, primarily referring to the configuration content for component linkage, which is essential for multiple components, once granularly assembled, to achieve the anticipated application functionalities.  
Overall, this paper adopts a modular development approach for component development, decomposing complex systems into multiple independent and reusable components, each fulfilling specific functions to meet users' personalized system customization needs, while facilitating development, testing, and maintenance. For the development of individual components, this paper further encapsulates the digital agriculture component code based on Vue component code encapsulation, subdividing the component development framework into five core modules to enhance the flexibility of the components, as illustrated in Figure 2.  
The five core modules are, respectively, implemented through five core files. Among them, the core code module is realized by App.vue, which, after encapsulating attribute configurations, initial values, and linkage events into other modules, retains the core logic of the component responsible for implementing the main functionalities of the component. The initial value module is implemented by initValue.ts, which is used to define the initial values of the form. The configuration module is realized by formConfig.ts, allowing users to customize the configuration attributes of the component for generating forms. The event module is implemented by event.ts, defining the linkage events and methods of the component to ensure its interactivity. The entry file module is realized by the index.ts file, which packages the component's related events, attributes, and initial values and exports them through a modular approach.  
The digital agricultural GIS application suite in this paper employs a customized development method, consisting of two parts: interface customization and function customization. Interface customization and function customization are closely related; function customization determines the specific application functions of the component, while the interface serves as the carrier of these functions. By achieving customization of both aspects, the customized development method can be employed to construct specific industry application systems according to the requirements of specific industry applications.