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cssrain
September 02, 2014
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解读HTML5
解读HTML5
cssrain
September 02, 2014
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Transcript
HTML5 HTML5 Powered with Connectivity / Realtime, Device Access, Graphics,
3D &Effects, Multimedia, Performance &Integration, Semantics, and Offline &Storage © 亚信联创科技 新浪微博:@亚联UED 分享人:单东林
[email protected]
上海创新业务部门培训第03期(仅供内部培训使用) UED分享 · 交流 http://cssrain.github.io
© 亚信联创科技 Contact 单东林
[email protected]
1,HTML的历史 2,HTML5是什么 3,HTML5的DOCTYPE 4,新的语义标签 5,表单新特性
6,原生视频和音频支持 7,Web Socket通信 8,跨域访问 9,离线Web应用 10,本地存储-Web Storage 11,多线程-Web Workers 12,地理位置-Geolocation 13,绘图-Canvas 1 大致内容
© 亚信联创科技 Contact 单东林
[email protected]
HTML的历史 2 Tim Berners-Lee IETF
W3C WHATWG 1991 HTML 1996 HTML 2 1997 HTML 3.2 1998 HTML 4 1999 HTML 4.01 2000 XHTML 1 2006 XHTML 2 2010 HTML 5
© 亚信联创科技 Contact 单东林
[email protected]
HTML5是什么 3 爱多媒体,爱终端访问,爱3D特效,爱实时连接 爱图形化,爱离线存储,爱语义化,爱性能和集成 我不是CSS,也不是JavaScript
我是HTML,我只增加了一些新的元素和特性而已
© 亚信联创科技 Contact 单东林
[email protected]
4 <!DOCTYPE html PUBLIC "-//W3C//DTD
XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1- transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> </head> <body> <div>此处省略10000字</div> </body> </html> Do you remember ?
© 亚信联创科技 Contact 单东林
[email protected]
5 <!DOCTYPE html> <html> <head>
<meta charset=“utf-8”> <title>HTML5 markup</title> </head> <body> <h1>Hello,HTML5!</h1> </body> </html> HTML5的DOCTYPE
© 亚信联创科技 Contact 单东林
[email protected]
6 <html> <head> </head> <body>
<div id="header"></div> <div id="nav"></div> <div id="content"> <h1>My Article</h1> </div> <div id="footer"> </div> </body> </html> 新的语义标签 <html> <head></head> <body> <header></header> <nav></nav> <section> <article></article> </section> <footer></footer> </body> </html>
7 表单新特性 Input: Number,Range,Date, Color,Search,Tel,Email, Url,List Eg: <input type="email“ />
<input type="date“ /> <select data="http://domain/getcity"> </select> 新的控件类型 Required,min,max, multiple,pattern,low, high,optimum Eg: <input type="text" required > <input type="number" min=10 max=100 > 内置的表单验证 enctype="application/x-www- form+xml" Eg: <form action='/register' method="post“ enctype="application/x-www- form+xml" > XML提交类型 © 亚信联创科技 Contact 单东林
[email protected]
8 DEMO TIME! © 亚信联创科技 Contact 单东林
[email protected]
9 原生视频和音频支持 © 亚信联创科技 Contact 单东林
[email protected]
<Object> <Embed>
<Video> <Audio>
Contact 单东林
[email protected]
© 亚信联创科技 <object width="425" height="344"> <param name="movie“
value="http://www.youtube.com/v/9sEI1AUFJKw"></param> <param name="allowFullScreen" value="true"></param> <param name="allowscriptaccess" value="always"></param> <embed src="http://www.youtube.com/v/9sEI1AUFJKw" type="application/x- shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed> </object> <video width=”320” height=”240” controls preload> <source src="Ballmer_Developers_Developers.ogv" type='video/ogg; codecs="theora, vorbis"'> <source src="Ballmer_Developers_Developers.mp4" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"> </video> <audio width=”320” height=”240” controls preload> <source src="Lili_Ivanova_Vetrove.mp3"> </audio> 10
11 Web Socket通信 © 亚信联创科技 Contact 单东林
[email protected]
使用Ajax轮询,浏览器 定期发送HTTP请求
使用长轮询 使用流 Web Socket
12 跨域访问-传统方式 © 亚信联创科技 Contact 单东林
[email protected]
X Y
Y Y Y X X X
13 跨域访问-cross document messaging © 亚信联创科技 Contact 单东林
[email protected]
X
Y Y X var o = document.getElementsByTagName('iframe')[0]; o.contentWindow.postMessage('Hello world', 'http://b.example.org/');
14 离线Web应用 © 亚信联创科技 Contact 单东林
[email protected]
离线存储 + Web
SQL Database
15 本地存储-Web Storage © 亚信联创科技 Contact 单东林
[email protected]
4KB 5MB
不安全 安全 难用 易用
16 地理位置 Geolocation
17 多线程-Web Workers © 亚信联创科技 Contact 单东林
[email protected]
多进程 …….
假死 后台运行 神马都是浮云
18 绘图-Canvas © 亚信联创科技 Contact 单东林
[email protected]
Eg: <canvas id="myCanvas"></canvas>
<script > var canvas=document.getElementById('myCan vas'); var ctx=canvas.getContext('2d'); ctx.fillStyle='#FF0000'; ctx.fillRect(0,0,80,100); </script>
19 我又来了; © 亚信联创科技 Contact 单东林
[email protected]
© 亚信联创科技 Contact 单东林
[email protected]
Thanks & QA