HTML5 Introduction

标签：html5   canvas   localstorage   sqllite   

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

HTML5 Introduction

标签：html5   canvas   localstorage   sqllite   

原文地址：http://blog.csdn.net/jcx5083761/article/details/44339759