2. Vue3

  • 2.1. Vue3 tutorial

    Vue.js (pronunciation / vju steps /, similar to view) is a progressive framework for building a user interface. Vue...
    2025-10-25 13:33:37 UTC
  • 2.2. Vue3 installation

    2.2.1. 1.Independent version ¶ We can do it in Vue.js download the latest version directly from the official webs...
    2025-10-25 13:33:36 UTC
  • 2.3. Vue3 project packaging

    Package the Vue project using the following command: cnpm run build Execute the above command, and the output is as f...
    2025-10-25 13:33:37 UTC
  • 2.4. Vue3 creates a project

    In the previous chapter of Vue3 installation, we used the Vue init command to create a project. In this chapter, we main...
    2025-10-25 13:33:36 UTC
  • 2.5. Vue3 directory structure

    In the previous chapter, we used npm for the installation project (Vue-cli and Vite), we open the directory in IDE (Vsco...
    2025-10-25 13:33:35 UTC
  • 2.6. Vue3 start

    At the beginning of learning Vue, we do not recommend using the vue-cli command-line tool to create projects. A simpler ...
    2025-10-25 13:33:36 UTC
  • 2.7. Vue3 template syntax

    Vue uses HTML-based template syntax, which allows developers to declaratively bind DOM to the data of the underlying Vue ins...
    2025-10-25 13:33:37 UTC
  • 2.8. Vue3 conditional statement

    2.8.1. Conditional judgment ¶ v-if ¶ The conditional judgment uses the v-if instruction, and the express...
    2025-10-25 13:33:36 UTC
  • 2.9. Vue.js loop statement

    Recycle use v-for instructions. v-for instructions need to be specified with site in sites special grammar...
    2025-10-25 13:33:38 UTC
  • 2.10. Vue3 component

    Component (Component) is Vue.js one of the most powerful functions. Components can extend HTML elements to encapsulate...
    2025-10-25 13:33:35 UTC
  • 2.11. Vue3 calculation Properties

    Calculation attribute keywords: computed . Computational attributes are useful when dealing with some complex logic. ...
    2025-10-25 13:33:35 UTC
  • 2.12. Vue3 snooping Properties

    In this chapter, we will introduce the Vue3 snooping properties watch we can pass through watch to respond to change...
    2025-10-25 13:33:37 UTC
  • 2.13. Vue3 style binding

    2.13.1. Vue.js Class ¶ class and style are attributes of the HTML element, which is used to style the ele...
    2025-10-25 13:33:36 UTC
  • 2.14. Vue3 event handling

    We can use it. v-on directive to listen for DOM events to execute JavaScript code. v-on instructions can be abbrev...
    2025-10-25 13:33:36 UTC
  • 2.15. Vue3 form

    In this section, we introduce the applications on Vue forms. We can use v-model instructions in the form 、 a...
    2025-10-25 13:33:37 UTC
  • 2.16. Vue3 custom instruction

    Except for the core directive of the default setting v-model and v-show Vue also allows you to register custom direc...
    2025-10-25 13:33:36 UTC
《地理信息系统原理、技术与方法》  97

最近几年来,地理信息系统无论是在理论上还是应用上都处在一个飞速发展的阶段。 GIS被应用于多个领域的建模和决策支持,如城市管理、区划、环境整治等等,地理信息成为信息时代重要的组成部分之一; “数字地球”概念的提出,更进一步推动了作为其技术支撑的GIS的发展。 与此同时,一些学者致力于相关的理论研究,如空间感知、空间数据误差、空间关系的形式化等等。 这恰好说明了地理信息系统作为应用技术和学科的两个方面,并且这两个方面构成了相互促进的发展过程。