


Audio and video have become more and more popular now
In order to ensure cross-browser compatibility
, various websites still choose to use flash
(Source code intercepted from Youku)
Multimedia tags
Use
HTML5 adds two multimedia tags, audio and video.
The compatibility is pretty good, but lower versions of IE do not support it
Yes It allows us to insert audio and video controls without using any browser plug-ins
and it is very simple
(source code taken from Bilibili) The usage of the
element is as follows:
<audio src="media/xi-Halcyon.mp3" id="demoAudio">不支持H5-audio</audio> <video src="media/Animation.mp4" id="demoVideo">不支持H5-video</video>
If the content in the tag is not supported by the browser, it will be displayed.
Of course, when using these two elements,
at least add the src attribute , the attribute value is the URL of the resource
But each browser supports different media formats due to copyright issues
So you can use the following method
<audio id="demoAudio"> <source src="media/xi-Halcyon.mp3"> <source src="media/xi-Halcyon.ogg"> ... 不支持H5-audio </audio> <video id="demoVideo"> <source src="media/Animation.mp4"> <source src="media/Animation.webm"> ... 不支持H5-video </video>
to specify different resource formats
Also ensures the compatibility of various browsers
Attributes
In addition to src, the audio and video tags also have some public attributes
Description | |
---|---|
After setting this attribute, the audio/video resource is ready Play immediately | |
After setting this property, the browser playback control controls will be displayed | |
After setting this attribute, the audio/video will loop and start playing again after it ends | |
After setting this attribute, the audio/video will be played when the page is loaded Load and prepare to play (using autoplay will ignore this attribute) |
The above is the detailed content of HTML5 plug-in-free multimedia Media-detailed introduction to audio and video. For more information, please follow other related articles on the PHP Chinese website!

html5的div元素默认一行不可以放两个。div是一个块级元素,一个元素会独占一行,两个div默认无法在同一行显示;但可以通过给div元素添加“display:inline;”样式,将其转为行内元素,就可以实现多个div在同一行显示了。

html5中列表和表格的区别:1、表格主要是用于显示数据的,而列表主要是用于给数据进行布局;2、表格是使用table标签配合tr、td、th等标签进行定义的,列表是利用li标签配合ol、ul等标签进行定义的。

固定方法:1、使用header标签定义文档头部内容,并添加“position:fixed;top:0;”样式让其固定不动;2、使用footer标签定义尾部内容,并添加“position: fixed;bottom: 0;”样式让其固定不动。

HTML5中画布标签是“<canvas>”。canvas标签用于图形的绘制,它只是一个矩形的图形容器,绘制图形必须通过脚本(通常是JavaScript)来完成;开发者可利用多种js方法来在canvas中绘制路径、盒、圆、字符以及添加图像等。

html5中不支持的标签有:1、acronym,用于定义首字母缩写,可用abbr替代;2、basefont,可利用css样式替代;3、applet,可用object替代;4、dir,定义目录列表,可用ul替代;5、big,定义大号文本等等。

html5废弃了dir列表标签。dir标签被用来定义目录列表,一般和li标签配合使用,在dir标签对中通过li标签来设置列表项,语法“<dir><li>列表项值</li>...</dir>”。HTML5已经不支持dir,可使用ul标签取代。

3种取消方法:1、给td元素添加“border:none”无边框样式即可,语法“td{border:none}”。2、给td元素添加“border:0”样式,语法“td{border:0;}”,将td边框的宽度设置为0即可。3、给td元素添加“border:transparent”样式,语法“td{border:transparent;}”,将td边框的颜色设置为透明即可。

html5是指超文本标记语言(HTML)的第五次重大修改,即第5代HTML。HTML5是Web中核心语言HTML的规范,用户使用任何手段进行网页浏览时看到的内容原本都是HTML格式的,在浏览器中通过一些技术处理将其转换成为了可识别的信息。HTML5由不同的技术构成,其在互联网中得到了非常广泛的应用,提供更多增强网络应用的标准机。


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