11. HTML tutorial-(HTML5 Standard)

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Hypertext markup language (English: HyperText Markup Language, HTML) is a standard markup language for creating web pages.

You can use HTML to build your own WEB site, and HTML runs on the browser and is parsed by the browser.

In this tutorial, you will learn how to use HTML to create a site.

HTML is easy to learn! I believe you can learn it soon!

This tutorial contains hundreds of HTML instances.

Using the editor of this site, you can easily modify HTML online and view the running results of the instance.

注意: For Chinese pages, you need to use <meta charset=”utf-8”> Declare the code, otherwise there will be garbled. Some browsers (such as 360browser) will set GBK as the default encoding, then you need to set it to <meta charset=”gbk”>。

Suffix name of the HTML document

  • .html

  • .htm

There is no difference between the above two suffix names, and both can be used.

开始学习HTML!

HTML instance

Hundreds of online instances are included in the HTML manual, and you can edit and view the running results online.

查看 HTML 实例!

HTML reference manual

In the rookie tutorial, we provide a complete HTML reference manual, including tags, attributes, colors, entities, and so on.

HTML 标签参考手册

HTML/CSS/JS online tool

HTML/CSS/JS online tools can edit HTML, CSS, JS code online and view the results in real time. You can also save and share high-quality code: https://c.runoob.com/front-end/61

  • 11.33. HTML5 Canvas

    <canvas> Tags define graphics, such as charts and other images, which you must draw using...
    2024-02-23 23:00:05 UTC
  • 11.35. HTML5 MathML

    HTML5 can be used in documents MathML element, the corresponding label is <...
    2024-02-22 23:00:06 UTC
  • 11.36. HTML5 drag and drop

    Drag and drop is part of the HTML5 standard. Drag the RUNOOB.COM icon into the rectangle. ...
    2024-02-22 23:00:05 UTC
  • 11.37. HTML5 Geolocation

    HTML5 Geolocation is used to locate the location of the user. 11.37.1. Locate the locatio...
    2024-02-22 23:00:06 UTC
  • 11.38. HTML5 Video

    Many sites will use video. HTML5 provides a standard for displaying videos. 11.38.1. Chec...
    2024-03-05 23:37:50 UTC
  • 11.39. HTML5 Audio

    HTML5 provides a standard for playing audio files. 11.39.1. Audio on the Internet ...
    2024-02-22 23:00:06 UTC
  • 11.40. HTML5’s new Input type

    HTML5 has several new form input types. These new features provide better input control and validation. This ...
    2024-02-23 23:00:05 UTC
  • 11.41. HTML5 form element

    11.41.1. New form elements for HTML5 ¶ HTML5 has the following new form...
    2024-02-23 23:00:05 UTC
  • 11.42. HTML5 form Properties

    11.42.1. HTML5’s new form properties ¶ HTML5’s <for...
    2024-02-23 23:00:06 UTC
  • 11.43. HTML5 semantic elements

    Semantic = meaning Semantic element = meaningful element 11.43.1. What are seman...
    2024-02-22 23:00:06 UTC
  • 11.44. HTML5 Web storage

    HTML5 web storage, a better local storage method than cookie. 11.44.1. What is HTML5 Web ...
    2024-02-22 23:00:07 UTC
  • 11.45. HTML5 Web SQL database

    The Web SQL database API is not part of the HTML5 specification, but it is a separate specification that introduces a ...
    2024-02-22 23:00:05 UTC
  • 11.46. HTML5 application cache

    With HTML5, you can easily create an offline version of a web application by creating a cache manifest file. ...
    2024-02-22 23:00:07 UTC
  • 11.47. HTML5 Web Workers

    Web worker is a JavaScript that runs in the background and does not affect the performance of the page. ...
    2024-02-22 23:00:05 UTC
  • 11.48. HTML5 server sends events

    The HTML5 server sends an event that allows a web page to get updates from the server. 11.48.1. ...
    2024-02-22 23:00:06 UTC
  • 11.49. HTML5 code specification

    11.49.1. HTML code convention ¶ Many Web developers know very little ab...
    2024-02-23 23:00:06 UTC
Principles, Technologies, and Methods of Geographic Information Systems  102

In recent years, Geographic Information Systems (GIS) have undergone rapid development in both theoretical and practical dimensions. GIS has been widely applied for modeling and decision-making support across various fields such as urban management, regional planning, and environmental remediation, establishing geographic information as a vital component of the information era. The introduction of the “Digital Earth” concept has further accelerated the advancement of GIS, which serves as its technical foundation. Concurrently, scholars have been dedicated to theoretical research in areas like spatial cognition, spatial data uncertainty, and the formalization of spatial relationships. This reflects the dual nature of GIS as both an applied technology and an academic discipline, with the two aspects forming a mutually reinforcing cycle of progress.