问题描述
我正在寻找一种以编程方式动态更改navigator.userAgent的方法。在我尝试获得自动javascript单元测试器失败的尝试中，我放弃并试图开始使用fireunit。我立即猛烈闯入使用实际浏览器进行javascript测试的墙壁之一。
I'm looking for a way to programmatically change navigator.userAgent on the fly. In my failed attempt to get an automated javascript unit tester, I gave up and attempted to begin using fireunit. Immediately, I've slammed into one of the walls of using an actual browser for javascript testing.
具体来说，我需要更改navigator.userAgent来模拟几百个userAgent字符串，以确保在给定的功能上正确检测和覆盖。 navigator.userAgent只读，所以我好像卡住了！我怎么能模拟navigator.userAgent？用户代理切换器（插件）可以切换FF的useragent，但是我可以在javascript中执行吗？
Specifically, I need to change navigator.userAgent to simulate a few hundred userAgent strings to ensure proper detection and coverage on a given function. navigator.userAgent is readonly, so I seem stuck! How can I mock navigator.userAgent? User Agent Switcher (plugin) can switch FF's useragent, but can I do it within javascript?
推荐答案
尝试：
navigator.__defineGetter__('userAgent', function(){
return 'foo' // customized user agent
});
navigator.userAgent; // 'foo'
在FF2和FF3中尝试过。
Tried it in FF2 and FF3.
这篇关于在javascript中嘲笑一个useragent？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！