blocks|key|4313711|text|我认为这与：http://en.wikipedia.org/wiki/User_agent#User_agent_spoofing有关|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4313712|在早期，Netscape+(代号为Mozilla)是IE的主要竞争对手，他们希望防止被拒绝Netscape以外的浏览器的网站拒绝。|4313713|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/User_agent#User_agent_spoofing^0|6|1N|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

I think it had to do with: <a href="http://en.wikipedia.org/wiki/User_agent#User_agent_spoofing" rel="noreferrer">http://en.wikipedia.org/wiki/User_agent#User_agent_spoofing</a>

Back in the early days, Netscape (code named Mozilla) was the main rival of IE, and they wanted to prevent being rejected by sites rejecting browsers other than Netscape.

blocks|key|1411212|text|因为这是Netscape自我识别的方式，而微软希望与能够检测到Netscape并拒绝任何其他内容的网站合作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1411213|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Because that's how Netscape identified itself, and Microsoft wanted to work with sites that would detect Netscape and reject anything else.

blocks|key|111017|text|它是一个long+and+sad+story。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|111018|总而言之：|111019|111020|Mozilla浏览器发布，带有用户代理Mozilla/1.0+(Win3.1)。它被公开地更名为Netscape，但在它的用户代理中，它保留了它原来的名字。|ordered-list-item|style|CODE|111021|+is发布了。|111022|，Gecko，Konqueror，Opera，Safari和Chrome都决定以类似的方式欺骗以前浏览器的用户代理，以便操纵浏览器嗅探网页，使其正确地理解浏览器的功能。作为这种欺骗的一部分，所有浏览器都以Mozilla/作为它们的用户代理，就像它们之前的浏览器一样。许多其他的无稽之谈也随之而来，比如现代Chrome的用户代理同时声称自己是Mozilla、Chrome、Safari和“像壁虎”。|111023|111024|entityMap|0|LINK|mutability|MUTABLE|url|http://webaim.org/blog/user-agent-string-history/^0|4|I|0|0|0|0|J|K|0|0|2U|8|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|13|8|@]|9|@]|C|$]]|$1|G|3|H|5|I|7|14|8|@$A|15|B|16|J|K]]|9|@]|C|$]]|$1|L|3|M|5|I|7|17|8|@]|9|@]|C|$]]|$1|N|3|O|5|I|7|18|8|@$A|19|B|1A|J|K]]|9|@]|C|$]]|$1|P|3|-4|5|6|7|1B|8|@]|9|@]|C|$]]|$1|Q|3|-4|5|6|7|1C|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

It is a <a href="http://webaim.org/blog/user-agent-string-history/" rel="noreferrer">long and sad story</a>.

In summary:

<ol>
<li>Mozilla browser gets released, with User-Agent <code>Mozilla/1.0 (Win3.1)</code>. It is publicly renamed to Netscape, but in its User-Agent it keeps its original name .</li>
<li>Internet Explorer is released. It spoofs Netscape by starting its User-Agent with <code>Mozilla/</code> because web servers were routinely browser sniffing and serving pages with frames - a feature supported by both Netscape and IE, but not other browsers of the era - to Netscape only.</li>
<li>Over time, Gecko, Konqueror, Opera, Safari and Chrome each decide to similarly spoof the User-Agent of some previous browser in order to manipulate browser-sniffing web pages into correctly understanding their browser's features. As part of this spoofing, all the browsers start their User-Agents with <code>Mozilla/</code>, like the browsers before them had done. Plenty of other nonsense also results, like modern Chrome's User-Agent simultaneously claiming to be Mozilla, Chrome, Safari, and 'like Gecko'.</li>
</ol>

blocks|key|111040|text|正如@Jason提到的，“这是一个很长的故事”。将这个故事总结为“每个浏览器都假装是Mozilla”|type|unstyled|depth|inlineStyleRanges|entityRanges|data|111041|在尝试了所有方法之后，我最终使用了：http://www.useragentstring.com/|offset|length|111042|您可以使用上面的网站获取格式化的用户代理和操作系统。|111043|他们有一个API，你可以直接使用...|111044|entityMap|0|LINK|mutability|MUTABLE|url|http://www.useragentstring.com/|1|http://www.useragentstring.com/?uas=Mozilla/5.0%2520%2528Windows%2520NT%25206.1%2529%2520AppleWebKit/537.36%2520%2528KHTML,%2520like%2520Gecko%2529%2520Chrome/27.0.1453.110%2520Safari/537.36&getJSON=all^0|0|I|V|0|0|0|5|3|1|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@$D|V|E|W|1|X]]|A|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Z|8|@]|9|@$D|10|E|11|1|12]]|A|$]]|$1|J|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]|R|$5|M|N|O|A|$P|S]]]]

As mentioned by @Jason "Its a long story". Summing that story up "its just every browser pretends to be Mozilla"

After trying everything, I have finally used: <a href="http://www.useragentstring.com/" rel="noreferrer">http://www.useragentstring.com/</a>

You can use the above website to get the formatted user agent and OS. 
They have an <a href="http://www.useragentstring.com/?uas=Mozilla/5.0%20%28Windows%20NT%206.1%29%20AppleWebKit/537.36%20%28KHTML,%20like%20Gecko%29%20Chrome/27.0.1453.110%20Safari/537.36&amp;getJSON=all" rel="noreferrer">API</a> which you can use directly...

blocks|key|112098|text|Mozilla/5.0是通用的标记，表示浏览器与Mozilla兼容，并且在当今几乎所有浏览器中都很常见。有关详细信息，请参阅click+here|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|112099|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/User-Agent/Firefox^0|1Q|A|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Mozilla/5.0 is the general token that says the browser is Mozilla compatible, and is common to almost every browser today.
for more detail <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/User-Agent/Firefox" rel="nofollow noreferrer">click here</a>

blocks|key|1097191|text|造成这种情况的原因是臭名昭著的浏览器大战。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1097192|简而言之，浏览器开始伪装成其他浏览器，因为一些网站根据哪种浏览器请求内容来提供内容，而且他们也想要为其他浏览器提供内容。|1097193|我觉得很奇怪，直到今天还没有解决这个问题。由于遗留的原因，userAgent不能被安全地移除，为什么没有引入一些明确识别浏览器的新功能？是的，大多数时候你不需要浏览器检测，而是一个功能检测，但它也不是内置的JS！|CODE|1097194|entityMap^0|F|5|0|0|T|9|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|P|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|Q|8|@$9|R|A|S|B|J]]|D|@]|E|$]]|$1|K|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|L|$]]

Reason for this are the infamous browser wars.

In short - browsers started to pretend to be some other browser, because some websites served content based on which browser asked for it and they also wanted content meant for other browsers.

I find it surprising it still haven't been solved to this day. Since <code>userAgent</code> can't be safely removed for legacy reasons, why some new feature clearly identifying a browser wasn't introduced? Yes, most of the time you don't need browser detection, but rather a feature detection, but it is not built-in JS neither!

All popular browsers' user agent strings, even Internet Explorer's, start with <code>Mozilla/</code>. Why is this the case?

Why do all browsers' user agents start with "Mozilla/"?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

所有流行浏览器的用户代理字符串，即使是‘s浏览器，都以Mozilla/开头。为什么会这样呢？

问为什么所有浏览器的用户代理都以"Mozilla/“开头？
EN

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问为什么所有浏览器的用户代理都以"Mozilla/“开头？EN