计算机技术与发展

HTML(HyperText Mark-up Language)是目前网络上应用最为广泛的语言,也是构成网页文档的主要语言。旧有的HTML版本是10年之前制定的,在表达和应用上已经很难满足开发人员和使用者的需求。为了适应这快速发展的Web技术以及不断提出的Web应用需求,HTML5应运而生。首先简要描述了HTML5的发展历程,然后重点介绍HTML5的特点和应用,并与现有的Web技术如RIA(Rich Internet Applications)、cookies等在网络通信、数据存储、地理定位、音视频播放、网页绘图方面进行比较,分析HTML5在这些领域的优势,从而得出结论。HTML5较之前的版本加入的新功能,能够使开发和使用网页更加便捷,并与浏览器很好地结合,降低了浏览器对资源的占有率以及对插件的依赖。最后探讨了HT-ML5中存在的一些问题和今后主要发展的方向。

HTML(HyperText Mark-up Language),which is the most widely used Web language in the Internet,is the main language that forms Web documents.The old version proposed by 10 years ago,has been difficult to meet the needs of developers and users in the expression and application.HTML5 came into being,in order to adapt to the rapid development of Web technology and the demands of Web applications.It introduces the development process of HTML5 at first,then describes the characteristics and application of HTML5,and compares it in the factors of network communications,data storage,geographic location,and canvas with the existing Web technologies,such as RIA(Rich Internet Applications),cookies and so on,in addition to be analysis of the superiority of HTML5 in these areas.So it is the conclusion that compared with the previous versions,HTML5 adds many new features,which make it easier to develop and use the Web,better to integrate with the browser,less to share resources in the browser and dependence on the plug-in.Finally,discuss problems existing in HTML5 and the direction of development in the future.