文/牛海彬
原文:
The term user agent and the lack of understanding what a user agent is can also be a problem.Normally, the user agent is a browser like Microsoft Internet Explorer (MSIE), Netscape,Mozilla (Moz), Firefox (Fx), Opera, or Safari. However, browsers are not the only user agents onthe Web. Others include• Assistive technology that helps users to overcome the limitations of a disability—liketext-to-speech software or Braille displays• Text-only agents like Lynx• Web-enabled applications• Game consoles• Mobile/cell phones• PDAs• Interactive TV set-top boxes• Search engines and other indexing programs• And many moreThis large variety of user agents, of different technical finesse (and old user agents thatdon’t get updated), is also a great danger for JavaScript.
译文:
术语用户代理和对用户代理是什么的缺乏理解同样也是个问题。通常,用户代理是指一个浏览器,如微软的Internet Explorer(MSIE),Netscape,Mozilla(Moz),Firefox(Fx),Opera或Safari。但是浏览器不是Web上唯一的用户代理。其它的包括:
n 辅助技术,用来帮助用户克服它们的缺陷—如文本阅读软件或者盲人显示器
n 纯文字网页浏览器,像Lynx
n Web激活的应用程序
n 游戏控制台
n 手机/蜂窝电话
n 掌上手机(PDAs)
n 交互式的电视机顶盒
n 搜索引擎和其它检索程序
n 更多其他的
这么多类用户代理,不同的技术手段(一些旧的用户代理没有更新),对于JavaScript也是一个非常大的危险。
注:有翻译不当的地方,欢迎指出,也可发邮件到pleasechess@126.com直接和我交流
转载于:https://www.cnblogs.com/myitworld/archive/2006/12/30/2214962.html