浏览器未知协议不可用_为什么浏览器会自动联系未知的第三方网站？
浏览器未知协议不可用
While we may not think about it very much, there is quite a bit more going on ‘behind the scenes’ than we might realize when browsing the internet. We explore the reasons why our browsers are busy contacting unknown third-party websites in today’s SuperUser Q&A post.
尽管我们可能没有考虑太多，但“幕后”发生的事情要比浏览互联网时想象的要多得多。 我们在今天的SuperUser Q＆A帖子中探讨了我们的浏览器忙于联系未知的第三方网站的原因。
Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites.
今天的“问答”环节由SuperUser提供，它是Stack Exchange的一个分支，该社区是由社区驱动的Q＆A网站分组。
问题 (The Question)
SuperUser reader Fsaladin wants to know why a browser is automatically contacting unknown third-party websites without permission:
超级用户阅读器Fsaladin想知道为什么浏览器未经许可会自动联系未知的第三方网站：
When I visit a website, everything connects as it should, however, I notice that my browser also contacts unknown third-party websites automatically. In Mozilla Firefox, an extension called Lightbeam shows the third-party websites that my browser contacted without my permission. I visited 15 websites and my browser automatically contacted nearly 50 other third-party websites.
当我访问一个网站时，一切都会正常连接，但是，我注意到我的浏览器还会自动联系未知的第三方网站。 在Mozilla Firefox中， 名为Lightbeam的扩展名显示未经我许可浏览器联系的第三方网站。 我访问了15个网站，我的浏览器自动联系了将近50个其他第三方网站。
What is the reason behind this? Can anybody explain?
这是什么原因呢？ 有人可以解释吗？
What is going on here? Why is Fsaladin’s browser automatically contacting so many unknown websites without permission?
这里发生了什么？ 为什么Fsaladin的浏览器会在未经许可的情况下自动联系这么多未知的网站？
答案 (The Answer)
SuperUser contributor Oxymoron has the answer for us:
超级用户贡献者Oxymoron为我们提供了答案：
There are many different reasons.
有很多不同的原因。
1. Almost all the ads you see come from third-parties.
1.您看到的几乎所有广告都来自第三方。
2. The developers of the website may use third-party libraries to achieve their goals, such as jQuery and others.
2.网站的开发人员可以使用第三方库来实现其目标，例如jQuery等。
3. The website may depend on data from another website, such as an API.
3.该网站可能依赖于来自另一个网站的数据，例如API。
The complete list is extensive, however these three are the main reasons. Most are harmless and nothing to worry about, however, one should always educate themselves about the dangers just in case.
完整列表很详尽，但是这三个是主要原因。 大多数人无害，无所担心，但是，为以防万一，应始终对危险进行自我教育 。
Although most of us are focused solely on work or play while browsing the internet, there is quite a bit more going on ‘behind the scenes’ than we may be aware of, or take the time to think about.
尽管我们大多数人只专注于浏览互联网时的工作或娱乐，但“幕后”发生的事情要比我们可能意识到或花的时间多得多。
Have something to add to the explanation? Sound off in the comments. Want to read more answers from other tech-savvy Stack Exchange users? Check out the full discussion thread here.
有什么补充说明吗？ 在评论中听起来不错。 是否想从其他精通Stack Exchange的用户那里获得更多答案？ 在此处查看完整的讨论线程 。
浏览器未知协议不可用