HTML5 Introduction

1. HTML5 History

HTML4.01 –1999.12
HTML5 – 2014.10– Done (8 years)
    In2006,WHATWG&W3C,decide to create a new version ofHTML
    In2008,the first draft     has been published.
    In2012,Make sure the final     version of HTML5
    In2013,Publish the draft     version of HTML5.1
    In2014.10,Done and     publish with tears
    In2016,publish HTML5.1     for a plan (W3C).

2. Support of main browser

IE9+,Chrome,Firefox,Safari,Opera and domestic browsers

Total:550

Date:2014.12.18

3. HTML5 new attributes

3.1 Semantic

Div,table à<article> <aside> <figcaption> <figure> <footer><header> <hgroup> <nav> <section> <time>

3.2 OFFLINE & STORAGE

Cookie: 4kb

Html5: 5M

Invoke method: Window.localStorage

Set value:
       localStorage.a = 3;
       localStorage["a"] = "sfsf";
       localStorage.setItem("b","isaac");
Get value:
           var a1 = localStorage.a;
           var a2 = localStorage["a"];
           var b = localStorage.getItem("b");
Clear item:
           localStorage.removeItem("c");

3.3 Device access

Microphones and camera

3.4  Connectivity

Server-Sent Event and WebSockets

3.5  MultiMedia                           

Video:

 

Video format: MP4 (H.264+AAC); OGV (Ogg Theora + Ogg Vorbis); WebM(VP8)

3.6   3D、Graphics & Effects

SVG、Canvas

3.7 Performance and Integration

XMLHttpRequest2:fixed cross domain issue

Before:Jsonp[<script>] and access http in background

3.8 CSS3

More and stronger style

3.9  Local DB

DB path: C:\Users\cxji.CSICN\AppData\Local\Google\Chrome\UserData\Default\databases\ Databases.db

4. Advantages and disadvantages