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  • 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   3DGraphics & Effects

    SVGCanvas

    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:Userscxji.CSICNAppDataLocalGoogleChromeUserDataDefaultdatabases Databases.db

    4. Advantages and disadvantages

     

     

     

     

    版权声明:本文博主原创文章,博客,未经同意,不得转载。

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  • 原文地址:https://www.cnblogs.com/bhlsheji/p/4759220.html
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