Javascr ipt是一种基于对象(Object)和事件驱动(Event Driven)并具有安全性能的脚本语言。使用它的目的是与HTML超文本标记语言、Java 脚本语言（Java小程序）一起实现在一个Web页面中链接多个对象，与Web客户交互作用。从而可以开发客户端的应用程序等。-Javascr ipt is an object-based (Object) and event-driven (Event Driven) and have the security of a scr ipting language. It is designed to use with HTML HTML, Java scr ipting language (Java applet) with implementation in a Web page link to a number of targets, interaction with the Web client. So that we can develop client applications.