7. Bootstrap5

  • 7.1. Bootstrap5 tutorial

    Bootstrap is the world’s most popular front-end component library for developing WEB projects with responsive layouts and mo...
    2025-10-25 13:35:33 UTC
  • 7.2. Bootstrap5 installation and use

    We can install Bootstrap5 in two ways: Use Bootstrap5 CDN. From the official website getbootstrap.com download Boo...
    2025-10-25 13:35:30 UTC
  • 7.3. Bootstrap5 container

    In the previous chapter, we learned that Bootstrap needs a container elementto wrap the content of the site. We can use th...
    2025-10-25 13:35:32 UTC
  • 7.4. Bootstrap5 grid system

    Bootstrap provides a responsive, mobile device-first streaming grid system that automatically divides into up to 12 columns ...
    2025-10-25 13:35:28 UTC
  • 7.5. Bootstrap5 text typesetting

    7.5.1. Bootstrap 5 default settin ¶ Bootstrap 5 default font-size for 16px line-height 1.5. Default font-...
    2025-10-25 13:35:31 UTC
  • 7.6. Bootstrap5 Color

    Bootstrap 5 provides some representative color classes: .text-muted , .text-primary , .text-success , .text-in...
    2025-10-25 13:35:31 UTC
  • 7.7. Bootstrap5 form

    7.7.1. Bootstrap5 basic form ¶ Bootstrap5 passed .table class to set the style of the underlying table, as an exa...
    2025-10-25 13:35:30 UTC
  • 7.8. Bootstrap5 image shape

    7.8.1. Rounded corner picture ¶ .rounded class allows the picture to show a fillet effect: Example ¶ ...
    2025-10-25 13:35:31 UTC
  • 7.9. Bootstrap5 Jumbotron

    Jumbotron (large screen) creates a large gray background box in which you can set up some special content and information. ...
    2025-10-25 13:35:30 UTC
  • 7.10. Bootstrap5 message prompt box

    Bootstrap 5 can easily implement an information prompt box. The prompt box can use the ‘. alert’ class, followed by ....
    2025-10-25 13:35:27 UTC
  • 7.11. Bootstrap5 button

    Bootstrap 5 provides different styles of buttons. 7.11.1. Example ¶ Basic buttonsbutton> Main buttonsbutton> Secon...
    2025-10-25 13:35:33 UTC
  • 7.12. Bootstrap5 button group

    Bootstrap 5 allows us to put buttons on the same line. It can be found in the add on the element .btn-group class...
    2025-10-25 13:35:31 UTC
  • 7.13. Bootstrap5 badge

    Badges (Badges) are mainly used to highlight new or unread items. To use a badge, just set the .badge class plus a co...
    2025-10-25 13:35:30 UTC
  • 7.14. Bootstrap5 progress bar

    The progress bar shows the completion of the user’s task. The steps to create a basic progress bar are as follows A...
    2025-10-25 13:35:30 UTC
  • 7.15. Bootstrap5 loading effect

    To create a loading effect, you can use the .spinner-border class: 7.15.1. Example ¶ div> You can use the ...
    2025-10-25 13:35:29 UTC
  • 7.16. Bootstrap5 paging

    In the process of web page development, if you encounter too much content, you will generally do paging. Bootstrap 5 can e...
    2025-10-25 13:35:28 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。