1. Which of the following is not a native technology?
A. JavaScript B. HTML5 C. CSS3 D. uni-app
2. What is the main advantage of using uni-app for cross-platform development?
A. Simplified development process B. Better performance C. Enhanced security D. All of the above
3. What does “composable” mean in the context of ui-component development?
A. A reusable piece of UI code B. A part of a Vue component that can be easily swapped out C. An element that can hold its own state and render itself D. A way to optimize performance in a Vue app
4. What are the four key features of React?
A. Virtual DOM, Component-based architecture, JSX, One-way data binding B. Single-file components, Server-side rendering, Concurrent programming, Reusability C. Declarative rendering, Event handling, Data binding, Lazy loading D. Declarative UI, Responsive design, Accessibility, Internationalization
5. What is the purpose of the `onLoad` lifecycle function in a uni-app component?
A. To handle network requests B. To initialize global variables C. To display a welcome message D. To perform data fetching
6. How does uni-app ensure cross-platform consistency?
A. By using a single codebase for both iOS and Android B. By enforcing strict coding standards across all platforms C. By providing a set of pre-built UI components that work across all platforms D. By leveraging platform-specific APIs where necessary
7. What is the difference between a normal JavaScript function and a named function in a Vue component?
A. A normal JavaScript function can access the component's data and methods, while a named function cannot B. A named function has a longer name than a normal function C. A normal function can only be called from within the component, while a named function can be called both inside and outside the component D. A normal function always returns a value, while a named function may or may not return a value
8. What kind of data structure is typically used to store data in a Vuex store?
A. An array B. An object C. A tree D. A set
9. What is the benefit of using a declarative approach to building UI components with ui-component?
A. It makes it easier to understand and maintain complex UIs B. It allows for more efficient development and deployment C. It simplifies the process of writing server-side code D. It enables better performance through lazy loading and virtual DOM updates
10. What is one of the advantages of using uni-app over traditional native app development?
A. Faster development time B. Lower cost C. Greater flexibility D. Better performance
11. What is the first step in the development process of a uni-app project?
A. Defining the project's requirements B. Setting up the development environment C. Designing the project's architecture D. Writing the project's source code
12. What is the primary purpose of creating a new folder during the development process of a uni-app project?
A. Storing static assets B. Organizing project modules C. Managing project dependencies D. Separating production and development environments
13. Which of the following is a recommended practice when writing uni-app components?
A. Using a separate file for each component B. Sharing code between components as much as possible C. Relying on third-party libraries for everything D. Mocking third-party libraries to avoid integration issues
14. What is the purpose of using a virtual DOM in a Vue app?
A. To improve the performance of data updates B. To simplify the process of writing event handlers C. To provide a more efficient way of handling user input D. To create a reactive data structure that can be updated automatically
15. What is one of the benefits of using a component-based architecture in a uni-app project?
A. It makes it easier to manage the project's architecture B. It allows for more efficient code reuse C. It simplifies the process of debugging and testing D. It provides a better separation of concerns
16. What is a common approach to managing the state of a uni-app component?
A. Using a global variable B. Implementing a Redux store C. Relying on props and eventdriven architecture D. None of the above
17. What is the most important aspect to consider when optimizing the performance of a uni-app app?
A. Ensuring smooth scrolling B. Minimizing the number of HTTP requests C. Rendering only the visible elements D. All of the above
18. What is one of the main differences between a Vuex store and a Redux store?
A. Vuex provides a more flexible data API, while Redux requires a strict top-down data flow B. Vuex allows for mutations, while Redux only allows for actions C. Vuex provides automatic state updates, while Redux relies on hard-coded state updates D. Vuex requires a more complex configuration, while Redux has a simpler setup process
19. What is one of the main advantages of using a language like TypeScript in a uni-app project?
A. It provides better type checking and error reporting B. It simplifies the process of debugging and testing C. It improves the performance of the app D. It allows for greater flexibility in component development
20. Which of the following is NOT a feature of the uni-app framework?
A. Reactive data B. Component-based architecture C. Simplified event handling D. Strong typing
21. What is the primary benefit of using uni-app for building cross-platform apps?
A. Faster development time B. Better performance C. Greater flexibility D. All of the above二、问答题
1. 什么是原生技术？
2. 什么是跨平台技术？
3. uni-app是什么？
4. 组件化开发在uni-app中的作用是什么？
5. 全局状态管理在uni-app中的作用是什么？
6. 声明式渲染在uni-app中的作用是什么？
7. 如何实现异步组件更新？
8. 如何进行uni-app的结合？
9. 如何进行uni-app的环境搭建？
10. 如何在uni-app中进行代码规范与维护？
参考答案
选择题：
1. D 2. D 3. A 4. A 5. D 6. C 7. C 8. B 9. D 10. D
11. B 12. B 13. B 14. D 15. D 16. B 17. D 18. A 19. A 20. D
21. D
问答题：
1. 什么是原生技术？
原生技术是指直接使用HTML、CSS和JavaScript等Web技术进行开发的的技术，无需借助任何框架或库。
思路
：原生技术是Web开发的基础，包括HTML、CSS和JavaScript等技术。
2. 什么是跨平台技术？
跨平台技术是一种能够同时在多个平台上运行的技术，如uni-app。
思路
：跨平台技术让开发者编写一次代码，就能在多个平台上运行，提高了开发效率。
3. uni-app是什么？
uni-app是一款基于Vue.js的跨平台框架，用于构建高性能、易维护的Web应用。
思路
：uni-app利用了Vue.js的组件化开发和双向数据绑定等特性，同时也提供了与其他技术集成的能力。
4. 组件化开发在uni-app中的作用是什么？
在uni-app中，组件化开发可以让开发者轻松构建可复用的 UI 组件，提高代码的可维护性和可读性。
思路
：组件化开发将复杂的界面划分为多个简单的组件，每个组件负责一部分功能，这样可以使代码更加模块化和结构化。
5. 全局状态管理在uni-app中的作用是什么？
在uni-app中，全局状态管理用于管理应用的全局数据，如用户信息、购物车数据等。
思路
：全局状态管理可以帮助开发者更好地管理和维护应用的全局数据，避免在多个页面之间共享和传递数据。
6. 声明式渲染在uni-app中的作用是什么？
在uni-app中，声明式渲染可以提高页面的性能和可读性，避免了模板引擎的渲染方式。
思路
：声明式渲染是一种编程方式，可以直接指定页面元素的结构和样式，避免了模板引擎的中间结果，提高了渲染效率。
7. 如何实现异步组件更新？
在uni-app中，可以通过生命周期函数或者事件监听来实现异步组件更新。
思路
：生命周期函数可以在组件的不同阶段执行一些特定的操作，如创建、更新、销毁等，而事件监听则可以监听组件上的事件，并在事件触发时执行相应的操作。
8. 如何进行uni-app的结合？
uni-app可以通过插件的方式与其他技术进行结合，如与Vue、React等进行对比和集成。
思路
：uni-app提供了丰富的插件生态，可以方便地与其他技术进行集成，从而满足不同的开发需求。
9. 如何进行uni-app的环境搭建？
uni-app的环境搭建主要包括安装Node.js和安装uni-app CLI两个步骤。
思路
：环境搭建是进行uni-app开发的第一步，只有搭建好环境，才能进行后续的开发工作。
10. 如何在uni-app中进行代码规范与维护？
在uni-app中，可以通过配置和监控来保证代码规范与维护。
思路
：uni-app提供了丰富的代码规范选项和监控工具，可以帮助开发者自动完成代码规范的检查和维护。
