下面说法正确的是 ( )

A、Java是一种编译语言
B、JavaScript是由Sun公司开发的
C、JavaScript的源代码非常的安
D、Java采用强定义类型变量检查
E、Java的开发周期比JavaScript短
查看答案
正确答案:

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答案解析:

Java是美国SunMicrosystems公司推出的新一代面向对象的程序设Internet的分布式应用程序开发;而JavaScript是Netsc公司的产品,其目的是为扩展NetscapeNavigator浏览器的功能而开发的Web页面中的基于对象和事件驱动的解释性语言,它的前身是Liv,而Ja—va的前身是0ak语言。

Java的源代码在传递到客户端执行之Java采用强定义类型变量检查,即所有变量在使用之前必JavaScript代码置于HTML文档中,这样,JavaS代码便暴露在众人面前,因而其源代码存在安全问题。JavaScript代码能Java代码的Java程序快。

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