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HTML5势不可挡,但Flash在视频、游戏方面依然有优势。其实现在互联网上跟风叫嚣Flash烂的人,绝大多数都是没有深入过Flash开发的人。Flash在技术上与HTML5+JS2+CSS3相比,目前还是有很多优势的:
- 比较完善的开发和调试环境;
- 统一的性能表现;
- Socket连接的支持;
- 优秀的摄像头和麦克风的支持;
- 统一的平台语言;
- 面向虚拟3D设备的编程。
但,Flash也有很多劣势:
- 不适合企业开发。Flex是一个优秀的框架,但性能始终不够好(甚至可以说很差),对电脑配置要求越来越高,更新也太过缓慢;
- 拥有大量不懂编程的“伪程序员和伪闪客”编写了大量影响浏览器性能的Flash小广告和小动画,影响了互联网上绝大多数不懂技术和不懂Flash编程技术的人对Flash技术的正确判断;
- 不专业。上面两点影响了所有人的判断(包括我),认为一个用Flash技术制作的企业网站是不专业的;
- 性能,还是性能。基于浏览器的性能和基于浏览器的插件的性能,谁可能做得更好?
当然,上面说的大多数的优势与劣势,都是基于桌面平台的。Flash技术在移动平台上可以说是完败。JAVA都做不到的事情,Flash也做不到。Sun做不到的事情,Adobe更不可能做到。
Adobe一开始就走错了路,搞了个不伦不类的Flash Lite,居然现在还开发到4.0!如果一开始就走原生程序的路,现在或许会好很多。
AIR是个不错的东西,但还是被Adobe那龟速的开发时间表所拖累,先是放弃了Linux平台的用户与开发者,然后到了3.0才加上原生插件支持,结果现在都脱不了“玩具”的帽子。
Adobe放弃支持移动平台Flash Player,是希望集中精力用AIR统一移动开发平台,至于结果如何,就只有拭目以待了。
- iphone 的浏览器不支持flash,除了所谓性能问题,主要原因还是flash的跨平台性和不用通过app store而实现应用,深刻的威胁苹果app store的盈利模式。
- 而现在flash已通过移动开发平台AIR(flash的非网页开发)实现了大量在app store里面使用的应用。
- adobe 放弃的是flash在移动浏览器中的开发,而不是在移动设备中的全部开发
- flash在移动设备游戏开发上的优势html5一时还是有巨大差距的
- adobe的赚钱软件可不止PS,Flash这两个。
- HTML5本来也不会被Adobe放过的,Dr本来就是HTML编辑的权威软件。
另外,Adobe收购PhoneGap只能是权宜之技,未来方向App还是HTML5,今后被Apple或Google竞争中一统后,还会有PhoneGap什么事呢?
而其实PC互联网Flash未来被HTML5取代,才是Adobe最要命的,这块老家底不保,Adobe也就剩PS了。 发展是永恒不变的,flash中被认可的功能都将在HTML5中得以移植和发展,flash作了浏览器本应该做的事,为浏览器提供了更丰富的扩展和组件,现在浏览器认识到这种需要,自己去实现,这就是HTML5,这是正确的路,是一种进步,能提供更高效和原生的web扩展支持,如果adobe固守浏览器,实际上是阻碍这种进步,所以adobe放弃mobile,淡化浏览器通用平台,专注于桌面,推进HTML5是正确的选择,而adobe在flash上的经验和技术将帮助HTML5更好的发展,为Adobe在HTML5应用上占有一席之地(甚至adobe如果有远见,收购一款浏览器也未尝不可,这里扯远了),这里有flash团队的一篇文章,详细阐述了flash的未来发展方向,值得阅读:http://www.mikechambers.com/blog/2011/11/11/clarifications-on-flash-player-for-mobile-browsers-the-flash-platform-and-the-future-of-flash/ 反正目前的flash问题多多,特别是在浏览器下的CPU资源占用超高,这也是苹果怎么也不肯引进flash到iOS的原因之一 其实html5在很多特性开发方面还是有短板的,例如录音的使用就是短板——虽然说可以用移动终端的java支持解决,可是毕竟在pc平台上很麻烦啊……好在html5还在发展之中……

There is no difference between HTML5 and H5, which is the abbreviation of HTML5. 1.HTML5 is the fifth version of HTML, which enhances the multimedia and interactive functions of web pages. 2.H5 is often used to refer to HTML5-based mobile web pages or applications, and is suitable for various mobile devices.

HTML5 is the latest version of the Hypertext Markup Language, standardized by W3C. HTML5 introduces new semantic tags, multimedia support and form enhancements, improving web structure, user experience and SEO effects. HTML5 introduces new semantic tags, such as, ,, etc., to make the web page structure clearer and the SEO effect better. HTML5 supports multimedia elements and no third-party plug-ins are required, improving user experience and loading speed. HTML5 enhances form functions and introduces new input types such as, etc., which improves user experience and form verification efficiency.

How to write clean and efficient HTML5 code? The answer is to avoid common mistakes by semanticizing tags, structured code, performance optimization and avoiding common mistakes. 1. Use semantic tags such as, etc. to improve code readability and SEO effect. 2. Keep the code structured and readable, using appropriate indentation and comments. 3. Optimize performance by reducing unnecessary tags, using CDN and compressing code. 4. Avoid common mistakes, such as the tag not closed, and ensure the validity of the code.

H5 improves web user experience with multimedia support, offline storage and performance optimization. 1) Multimedia support: H5 and elements simplify development and improve user experience. 2) Offline storage: WebStorage and IndexedDB allow offline use to improve the experience. 3) Performance optimization: WebWorkers and elements optimize performance to reduce bandwidth consumption.

HTML5 code consists of tags, elements and attributes: 1. The tag defines the content type and is surrounded by angle brackets, such as. 2. Elements are composed of start tags, contents and end tags, such as contents. 3. Attributes define key-value pairs in the start tag, enhance functions, such as. These are the basic units for building web structure.

HTML5 is a key technology for building modern web pages, providing many new elements and features. 1. HTML5 introduces semantic elements such as, , etc., which enhances web page structure and SEO. 2. Support multimedia elements and embed media without plug-ins. 3. Forms enhance new input types and verification properties, simplifying the verification process. 4. Offer offline and local storage functions to improve web page performance and user experience.

Best practices for H5 code include: 1. Use correct DOCTYPE declarations and character encoding; 2. Use semantic tags; 3. Reduce HTTP requests; 4. Use asynchronous loading; 5. Optimize images. These practices can improve the efficiency, maintainability and user experience of web pages.

Web standards and technologies have evolved from HTML4, CSS2 and simple JavaScript to date and have undergone significant developments. 1) HTML5 introduces APIs such as Canvas and WebStorage, which enhances the complexity and interactivity of web applications. 2) CSS3 adds animation and transition functions to make the page more effective. 3) JavaScript improves development efficiency and code readability through modern syntax of Node.js and ES6, such as arrow functions and classes. These changes have promoted the development of performance optimization and best practices of web applications.


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