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Head First HTML5 programming notes--chapter1 know HTML5

Source: Internet
Author: User
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<!DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01//en" "Http://www.w3.org/TR/html14/strict.dtd "><HTML>  <Head>    <Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8"/>    <title>Head First Lounge</title> 　　 <Linktype= "Text/css"rel= "stylesheet"href= "Lounge.css">   <Scripttype= "Text/javascript"src= "Lounge.js"></Script> </Head> <Body>  <H1>Welcome to Head first Lounge</H1>  <P>   <imgsrc= "Drinks.gif"alt= "Drinks">  </P>  <P>Join us any evening for refreshing<ahref= "elixirs.html">Elixirs</a>, conversation and maybe a game or both of the tap tap Revolation. Wireless access is always provided;  Byows (Bring Your Own Web Server). </P> </Body></HTML>

<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01//en" "Http://www.w3.org/TR/html14/strict.dtd " > <! DOCTYPE HTML > < HTML >  < Head >

< Meta http-equiv = "Content-type" content = "text/html; charset=utf-8" />

    <charset= "Utf-8"/>    <title> Head First Lounge</title>　　

< Link type = "Text/css" rel = "stylesheet" href = "Lounge.css" >

   <    rel= "stylesheet"  href= "Lounge.css">

< Script type = "Text/javascript" src = "Lounge.js" ></ Script >

   <Scriptsrc= "Lounge.js"></Script> </Head> <Body>  <H1>Welcome to Head first Lounge</H1>  <P>   <imgsrc= "Drinks.gif"alt= "Drinks">  </P>  <P>Join us any evening for refreshing<ahref= "elixirs.html">Elixirs</a>, conversation and maybe a game or both of the tap tap Revolation. Wireless access is always provided;  Byows (Bring Your Own Web Server). </P> </Body>
</ HTML >

HTML5 's technical family:

CSS3, Web worker threads, forms, offline Web applications, audio & video, new elements, local storage, canvas, geo-positioning

BULLET POINTS

  • HTML5 is the latest version of HTML. It introduces simplified markup, new semantics, and media elements, and relies on a set of JavaScript libraries that support Web applications.
  • XHTML is no longer a standard for Web pages. Developers and the consortium decide to continue to expand and refine the HTML.
  • The new, simpler HTML5 DOCTYPE are also supported on older browsers, which use standard mode when they see this doctype.
  • The type attribute is no longer required in the <script> tag or CSS style sheet link. JavaScript and CSS are now the default types.
  • The <meta> tag used to specify the character set has been greatly simplified and contains only character encodings.
  • UTF-8 is now the standard character set used on the Web.
  • Making changes to DOCTYPE and <meta> tags does not affect the display of the page on older browsers.
  • The new element of HTML5 is a superset of the HTML4 element, which means that older pages still work properly in modern browsers.
  • Officially, the HTML5 standard will not be formally completed 2014 years ago, but most modern browsers will support it before (there are many browsers now supporting HTML5)!
  • HTML5 introduces elements that add new semantics to the page, and can provide more options to create a Web page structure than HTML4.01.
  • Many of the new features in HTML5 require JavaScript for full use.
  • By using JavaScript, you can interact with the DOM, which is the Document Object model.
  • The DOM is an internal representation of the Web page's browser. By using JavaScript, you can access elements, modify elements, and add new elements to the DOM.
  • The JavaScript API is an "application programming interface." With the API, you can control all aspects of the HTML5, such as 2D drawing, video playback, and so on.
  • JavaScript is one of the most popular languages in the world. In recent years, there have been significant improvements in JavaScript implementations.
  • You can detect whether a new feature is supported in a browser and gracefully downgrade if not supported.
  • CSS is a HTML5 style standard, and many people use "HTML5" to describe the technology family that is used to create Web applications, including CSS.

Head First HTML5 programming notes--chapter1 know HTML5

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