If you have ever used the ‘ about:config ‘ screen in Firefox, then you would know that it is quite similar to the Windows’ Registry, for, it contains important information and settings.如果您有任何时候都用' ：配置 '在屏幕上的Firefox ，那么你会知道，这是很类似于Windows '注册表， ，它包含了重要信息和设置。 Fiddling with about:config, without knowing what you are doing could adversely affect Firefox. fiddling约：配置，不知道是什么，你正在做的可能不利影响Firefox 。 Of course, it may not be as catastrophic as when you mess up with your Windows’ Registry.当然，这可能并非如灾难性的，因为当你一塌糊涂，与您的Windows的注册表中。
Nevertheless, if you have customized your Firefox about:config to suit your needs, then it would be a good idea to back it up regularly, so that the next time you play with it and happen to screw it up, you could easily replace it with the back up copy.不过，如果您有自定义您的Firefox约：配置以满足您的需要，那么将是一个好主意将它备份起来，定期，这样当您下一次发挥与它发生螺钉它，您就可以轻松取代与备份副本。
Here is how you can back up the about:config settings.这里是如何，您可以备份起来，约：配置设置。
- First close down Firefox if it is running.首先关闭Firefox的，如果它正在运行。
- Go to Start > Run and type %appdata%\mozilla\firefox\profiles and hit < Enter >.去开始“ > 运行，并键入应用程序数据％ ％ \ Mozilla的\ Firefox的\概况 ，并撞向< 输入 > 。
- The resulting explorer window that opens will contain a folder with a peculiar name like ud732v0a.default .由此产生的Explorer中打开的窗口将包含一个文件夹，与一个奇特的名称一样， ud732v0a.default 。 The actual folder name that you see will most probably be different, but the name will resemble something like this.实际的文件夹名称，您看到的将极有可能有所不同，但名称将类似于这样的。
- Open the above folder and among other files you will find a file called prefs.js. This is the file we are looking for.打开上述文件夹和其他文件你会发现一个名为prefs.js ，这是档案我们正在寻找。 Just copy it to a safe location.只是将它复制到一个安全的位置。 Should you mess up something in ‘about:config’, simply close Firefox and copy the backup of prefs.js back to its original location.您应该一塌糊涂了一些在' ：配置' ，只需关闭Firefox并复制备份的prefs.js回到原来的位置。
If you're new here, you may want to subscribe to my RSS feed or get updates through email .如果您新在这里，您可能会想要订阅我的RSS饲料或得到更新通过电子邮件 。 Thanks for visiting!感谢来访！
