在WEB 应用的背景下,针对系统可扩展性不强、开发难度大、系统耦合性等方面的不足,提出了一种基于数据岛技术与AJAX、JavaScript 技术相结合进行WEB 系统应用的 方法,通过对系统的设计实现,得出利用上述技术实施系统的可行性,最终得到简单、易行、层次分明、开发周期较短的WEB 系统。 关键词:数据岛;AJAX;WEB 应用;JavaScript Abstract: Under the web application background, the system scalability is not strong, the development is great difficulty and coupled. So such as the shortage, we proposed a new technology based on data Island and AJAX, JavaScript technology combined with the application system WEB method. According to the design and implementation of the system, that using the technical implementation, so the feasibility of eventually is simple, easy, structured, and can achieve shorter WEB system development cycle. Keywords: data-island; AJAX; WEB Application; JavaScript