HTML（HyperText Markup Language）是用于创建网页的标记语言。它由一系列标签组成，这些标签描述了网页的结构和内容。在本章节中，我们将介绍一些 HTML 基础知识，包括常见的标签和属性。
HTML 文档结构
一个典型的 HTML 文档结构包含以下几个部分：
<!DOCTYPE html>：声明文档类型为 HTML5。<html>：包含整个 HTML 文档的根元素。<head>：包含文档的元数据，如标题、样式表和脚本等。<body>：包含文档的主要内容。
示例代码：
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HTML 标签
HTML 标签用于定义文档的结构和内容。每个标签由尖括号包围，并且通常成对出现，包括一个开始标签和一个结束标签。
常见的 HTML 标签包括：
<h1>到<h6>：定义标题。<p>：定义段落。<a>：定义链接。<img>：定义图像。<ul>和<ol>：定义无序列表和有序列表。<li>：定义列表项。<div>和<span>：定义块级和内联元素。
示例代码：
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以上是 HTML 基础知识的简要介绍，后续章节将进一步探讨 HTML 的各种功能和用法。
| 语言 | ISO 代码 |
|---|---|
| Abkhazian | ab |
| Afar | aa |
| Afrikaans | af |
| Albanian | sq |
| Amharic | am |
| Arabic | ar |
| Aragonese | an |
| Armenian | hy |
| Assamese | as |
| Aymara | ay |
| Azerbaijani | az |
| Bashkir | ba |
| Basque | eu |
| Bengali (Bangla) | bn |
| Bhutani | dz |
| Bihari | bh |
| Bislama | bi |
| Breton | br |
| Bulgarian | bg |
| Burmese | my |
| Byelorussian (Belarusian) | be |
| Cambodian | km |
| Catalan | ca |
| Cherokee | |
| Chewa | |
| Chinese (简体) | zh |
| Chinese (繁体) | zh |
| Corsican | co |
| Croatian | hr |
| Czech | cs |
| Danish | da |
| Divehi | |
| Dutch | nl |
| Edo | |
| English | en |
| Esperanto | eo |
| Estonian | et |
| Faeroese | fo |
| Farsi | fa |
| Fiji | fj |
| Finnish | fi |
| Flemish | |
| French | fr |
| Frisian | fy |
| Fulfulde | |
| Galician | gl |
| Gaelic (Scottish) | gd |
| Gaelic (Manx) | gv |
| Georgian | ka |
| German | de |
| Greek | el |
| Greenlandic | kl |
| Guarani | gn |
| Gujarati | gu |
| Haitian Creole | ht |
| Hausa | ha |
| Hawaiian | |
| Hebrew | he, iw |
| Hindi | hi |
| Hungarian | hu |
| Ibibio | |
| Icelandic | is |
| Ido | io |
| Igbo | |
| Indonesian | id, in |
| Interlingua | ia |
| Interlingue | ie |
| Inuktitut | iu |
| Inupiak | ik |
| Irish | ga |
| Italian | it |
| Japanese | ja |
| Javanese | jv |
| Kannada | kn |
| Kanuri | |
| Kashmiri | ks |
| Kazakh | kk |
| Kinyarwanda (Ruanda) | rw |
| Kirghiz | ky |
| Kirundi (Rundi) | rn |
| Konkani | |
| Korean | ko |
| Kurdish | ku |
| Laothian | lo |
| Latin | la |
| Latvian (Lettish) | lv |
| Limburgish ( Limburger) | li |
| Lingala | ln |
| Lithuanian | lt |
| Macedonian | mk |
| Malagasy | mg |
| Malay | ms |
| Malayalam | ml |
| Maltese | mt |
| Maori | mi |
| Marathi | mr |
| Moldavian | mo |
| Mongolian | mn |
| Nauru | na |
| Nepali | ne |
| Norwegian | no |
| Occitan | oc |
| Oriya | or |
| Oromo (Afaan Oromo) | om |
| Papiamentu | |
| Pashto (Pushto) | ps |
| Polish | pl |
| Portuguese | pt |
| Punjabi | pa |
| Quechua | qu |
| Rhaeto-Romance | rm |
| Romanian | ro |
| Russian | ru |
| Sami (Lappish) | |
| Samoan | sm |
| Sangro | sg |
| Sanskrit | sa |
| Serbian | sr |
| Serbo-Croatian | sh |
| Sesotho | st |
| Setswana | tn |
| Shona | sn |
| Sichuan Yi | ii |
| Sindhi | sd |
| Sinhalese | si |
| Siswati | ss |
| Slovak | sk |
| Slovenian | sl |
| Somali | so |
| Spanish | es |
| Sundanese | su |
| Swahili (Kiswahili) | sw |
| Swedish | sv |
| Syriac | |
| Tagalog | tl |
| Tajik | tg |
| Tamazight | |
| Tamil | ta |
| Tatar | tt |
| Telugu | te |
| Thai | th |
| Tibetan | bo |
| Tigrinya | ti |
| Tonga | to |
| Tsonga | ts |
| Turkish | tr |
| Turkmen | tk |
| Twi | tw |
| Uighur | ug |
| Ukrainian | uk |
| Urdu | ur |
| Uzbek | uz |
| Venda | |
| Vietnamese | vi |
| Volapük | vo |
| Wallon | wa |
| Welsh | cy |
| Wolof | wo |
| Xhosa | xh |
| Yi | |
| Yiddish | yi, ji |
| Yoruba | yo |
| Zulu | zu |