html basics (4) new elements

html5 new elements

html5 semantic elements

Defines the header of the document or a part of the document

Defines the part of the navigation link

Defines a certain area of ​​the document, such as a chapter, header, bottom or other area of ​​the document

Defines an independent content area of ​​the page. The content itself must be meaningful and must be independent from the rest of the document

Defines the sidebar content of the page

Defines the footer of a document or a part of a document

Usually includes the name of the document’s creator, the document’s copyright information, a link to the terms of use, contact information, etc.

Defines the main content of the document

In a document, more than one

element cannot appear. The

element cannot be a descendant of:

,

,

,

,

Defines independent stream content (images, charts, photos, code, etc.)

The content should be related to the main content, and the position of the element is independent from the main content. If it is deleted, it should not have an impact on the document flow

Define audio, such as music or other audio streams

Currently supported 3 audio formats: MP3, Wav, Ogg

<span style="font-size: 13px;"><span style="color: #0000ff;"><</span><span style="color: #800000;">audio </span><span style="color: #ff0000;">src</span><span style="color: #0000ff;">="song.ogg"</span><span style="color: #ff0000;"> controls</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"></</span><span style="color: #800000;">audio</span><span style="color: #0000ff;">></span><span style="color: #000000;">

如果考虑到不同浏览器对音频文件的兼容性：
</span><span style="color: #0000ff;"><</span><span style="color: #800000;">audio </span><span style="color: #ff0000;">controls</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">source </span><span style="color: #ff0000;">src</span><span style="color: #0000ff;">="song.ogg"</span><span style="color: #ff0000;"> type</span><span style="color: #0000ff;">="audio/ogg"</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">source </span><span style="color: #ff0000;">src</span><span style="color: #0000ff;">="song.mp3"</span><span style="color: #ff0000;"> type</span><span style="color: #0000ff;">="audio/mpeg"</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>Your browser does not support the audio tag.<span style="color: #0000ff;"></</span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">audio</span><span style="color: #0000ff;">></span></span>

autoplay: autoplay If this attribute appears, the audio will be played as soon as it is ready

controls: controls If this attribute is present, audio controls (such as play/pause buttons) are displayed to the user

loop: loop If this attribute appears, playback will be restarted whenever the audio ends

muted: muted If this attribute appears, the audio output is muted

preload: auto, meta, none specifies whether to load audio after the page is loaded. If the autoplay attribute is set, this attribute is ignored

Define video, such as a movie clip or other video stream

Currently supports 3 video formats: MP4, WebM, Ogg

<span style="font-size: 13px;"><span style="color: #0000ff;"><</span><span style="color: #800000;">video </span><span style="color: #ff0000;">src</span><span style="color: #0000ff;">=&ldquo;movie.mp4&rdquo; </span><span style="color: #ff0000;">controls</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"></</span><span style="color: #800000;">video</span><span style="color: #0000ff;">></span><span style="color: #000000;">

如果考虑到不同浏览器对视频文件的兼容性：
</span><span style="color: #0000ff;"><</span><span style="color: #800000;">video </span><span style="color: #ff0000;">width</span><span style="color: #0000ff;">="320"</span><span style="color: #ff0000;"> height</span><span style="color: #0000ff;">="240"</span><span style="color: #ff0000;"> controls</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">source </span><span style="color: #ff0000;">src</span><span style="color: #0000ff;">="movie.ogg"</span><span style="color: #ff0000;"> type</span><span style="color: #0000ff;">="video/ogg"</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">source </span><span style="color: #ff0000;">src</span><span style="color: #0000ff;">="movie.mp4"</span><span style="color: #ff0000;"> type</span><span style="color: #0000ff;">="video/mp4"</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>Your browser does not support the video tag.<span style="color: #0000ff;"></</span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">video</span><span style="color: #0000ff;">></span></span>

width 设置视频播放器的宽度

height 设置视频播放器的高度

autoplay：autoplay 如果出现该属性，则音频在就绪后马上播放

controls：controls 如果出现该属性，则向用户显示音频控件（比如播放/暂停按钮）

loop：loop 如果出现该属性，则每当音频结束时重新开始播放

muted：muted 如果出现该属性，则音频输出为静音

preload：auto、meta、none 规定是否在页面加载后载入音频，如果设置了autoplay属性，则忽略该属性

poster：url 指定视频下载时显示的图像，或者在用户点击播放按钮前显示的图像

 

定义了一个容器，用来嵌入外部应用或者互动程序（插件）

<span style="font-size: 13px;"><span style="color: #0000ff;"><</span><span style="color: #800000;">embed </span><span style="color: #ff0000;">src</span><span style="color: #0000ff;">="helloworld.swf"</span><span style="color: #ff0000;"> width</span><span style="color: #0000ff;">=" "</span><span style="color: #ff0000;"> height</span><span style="color: #0000ff;">=" "</span><span style="color: #ff0000;"> type</span><span style="color: #0000ff;">="MIME类型"</span><span style="color: #0000ff;">></span></span>

定义为媒体元素规定外部文本轨道

用于规定字幕文件或其他包含文本的文件，当媒体播放时，这些文件是可见的

<span style="font-size: 13px;"><span style="color: #0000ff;"><</span><span style="color: #800000;">video </span><span style="color: #ff0000;">width</span><span style="color: #0000ff;">="320"</span><span style="color: #ff0000;"> height</span><span style="color: #0000ff;">="240"</span><span style="color: #ff0000;"> controls</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">source </span><span style="color: #ff0000;">src</span><span style="color: #0000ff;">="forrest_gump.mp4"</span><span style="color: #ff0000;"> type</span><span style="color: #0000ff;">="video/mp4"</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">source </span><span style="color: #ff0000;">src</span><span style="color: #0000ff;">="forrest_gump.ogg"</span><span style="color: #ff0000;"> type</span><span style="color: #0000ff;">="video/ogg"</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">track </span><span style="color: #ff0000;">src</span><span style="color: #0000ff;">="subtitles_en.vtt"</span><span style="color: #ff0000;"> kind</span><span style="color: #0000ff;">="subtitles"</span><span style="color: #ff0000;"> srclang</span><span style="color: #0000ff;">="en" </span><span style="color: #ff0000;">label</span><span style="color: #0000ff;">="English"</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">track </span><span style="color: #ff0000;">src</span><span style="color: #0000ff;">="subtitles_no.vtt"</span><span style="color: #ff0000;"> kind</span><span style="color: #0000ff;">="subtitles"</span><span style="color: #ff0000;"> srclang</span><span style="color: #0000ff;">="no" </span><span style="color: #ff0000;">label</span><span style="color: #0000ff;">="Norwegian"</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">video</span><span style="color: #0000ff;">></span></span>

default：default 规定该轨道是默认的。如果用户没有选择任何轨道，则使用默认轨道

kind 规定文本轨道的文本类型

captions 该轨道定义将在播放器中显示的简短说明

chapters 该轨道定义章节，用于导航媒介资源

descriptions 该轨道定义描述，用于通过音频描述媒介的内容，假如内容不可播放或不可见

metadata 该轨道定义脚本使用的内容

subtitles 该轨道定义字幕，用于在视频中显示字幕

label 规定文本轨道的标题，例如当用户选择字幕轨道时，标题会显示出来

srclang 规定轨道的语言，如果kind属性的值是"subtitles"，则srclang属性是必需的

 

为

元素定义标题

<span style="font-size: 13px;"><span style="color: #0000ff;"><</span><span style="color: #800000;">figure</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">img </span><span style="color: #ff0000;">src</span><span style="color: #0000ff;">="1.jpg"</span><span style="color: #ff0000;"> alt</span><span style="color: #0000ff;">="The Pulpit Rock"</span><span style="color: #ff0000;"> width</span><span style="color: #0000ff;">="300"</span><span style="color: #ff0000;"> height</span><span style="color: #0000ff;">="300"</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">figcaption</span><span style="color: #0000ff;">></span>A view of the pulpit rock in Norway.<span style="color: #0000ff;"></</span><span style="color: #800000;">figcaption</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">figure</span><span style="color: #0000ff;">></span></span>

规定了用户可见的或者隐藏的需求的补充细节

用来供用户开启关闭的交互式控件，任何形式的内容都能被放在

标签里边

元素的内容对用户是不可见的，除非设置了open属性

标签为

元素定义一个可见的标题，当用户点击标题时会显示出详细信息

<span style="font-size: 13px;"><span style="color: #0000ff;"><</span><span style="color: #800000;">details </span><span style="color: #ff0000;">open</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">summary</span><span style="color: #0000ff;">></span>Copyright 1999-2011.<span style="color: #0000ff;"></</span><span style="color: #800000;">summary</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span> - by Refsnes Data. All Rights Reserved.<span style="color: #0000ff;"></</span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>All content and graphics on this web site are the property of the company Refsnes Data.<span style="color: #0000ff;"></</span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">details</span><span style="color: #0000ff;">></span></span>

定义度量衡，仅用于已知最大和最小值的度量，比如磁盘使用情况，查询结果的相关性等

<span style="font-size: 13px;"><span style="color: #0000ff;"><</span><span style="color: #800000;">meter </span><span style="color: #ff0000;">value</span><span style="color: #0000ff;">="2"</span><span style="color: #ff0000;"> min</span><span style="color: #0000ff;">="0"</span><span style="color: #ff0000;"> max</span><span style="color: #0000ff;">="10"</span><span style="color: #0000ff;">></span>2 out of 10<span style="color: #0000ff;"></</span><span style="color: #800000;">meter</span><span style="color: #0000ff;">> <</span><span style="color: #800000;">br</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">meter </span><span style="color: #ff0000;">value</span><span style="color: #0000ff;">="0.6"</span><span style="color: #0000ff;">></span>60%<span style="color: #0000ff;"></</span><span style="color: #800000;">meter</span><span style="color: #0000ff;">></span></span>

high 规定被界定为高的值的范围

low 规定被界定为低的值的范围

max 规定范围的最大值

min 规定范围的最小值

optimum 规定度量的最优值

value 规定度量的当前值

定义运行中的任务进度，请将标签与JavaScript一起使用来显示任务的进度

<span style="font-size: 13px;"><span style="color: #0000ff;"><</span><span style="color: #800000;">progress </span><span style="color: #ff0000;">value</span><span style="color: #0000ff;">="20"</span><span style="color: #ff0000;"> max</span><span style="color: #0000ff;">="100"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"></</span><span style="color: #800000;">progress</span><span style="color: #0000ff;">></span></span>

定义高亮显示文本

规定在文本中的何处适合添加换行符

 

 

html5已移除的元素









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