HTML5 不基于 SGML,所以不需要引用 DTD(HTML 4.01 基于 SGML)
video(视频)
兼容性:
<video src="..."
autoplay="autoplay"
controls="controls"
loop="loop"
width="500"
height="500"
poster="..."
muted>
audio(音频)
兼容性:
<audio src="..."
autoplay="autoplay"
controls="controls"
loop="loop"
width="500"
height="500">
source:媒介元素(音视频)
<video autoplay="autoplay"
controls="controls"
loop="loop"
width="500"
height="500">
<source src="..." type="video/mp4"
</video>
embed:嵌入插件(音视频)
<embed src="..."
type="audio/mp3"
width="300"
height="300" />
(显示不变,只是表达的含义进行了重新定义的标签)
<ol start=“10” reversed>
<li>Html</li>
<li>Css</li>
<li>JavaScript</li>
</ol>