使用Javascript添加`nofollow`是没用的吗？ [英] Is it useless to add `nofollow` using Javascript?

问题描述

AFAIK，链接上的 rel =nofollow属性指示搜索引擎在抓取您的网站时不要通过该链接，从而切断您之间关系的所有假设网站和链接的网站，因此，不分享您的任何SEO优点。在大多数情况下，这是评论系统中的 Good Thing™。

AFAIK, the rel="nofollow" attribute on links instruct search engines not to follow through the link when it crawls your site, therefore severing all assumption of relationship between your site and the linked site, and therefore, not sharing any of your SEO goodness. For the most part, that's a Good Thing™ on a comment system.

现在，在我的网站上集成了一个Disqus系统后，我注意到了评论者姓名链接到各自的网站没有 nofollow 。这种情况在我脑海中引起了警报 - 也就是说，直到我意识到这些是通过AJAX动态生成的。这意味着当搜索蜘蛛爬过我的网站时，这些链接不存在。

Now, after integrating an IntenseDebate system on my site, I noticed that the commenter names link through their respective websites without nofollow. This kind of raised an alarm in my head --- that is, until I realized that these were generated dynamically via AJAX. Which means that these links aren't there when a search spider crawls through my site.

避免了问题。好。松了一口气。

Problem averted. Good. A good sigh of relief.

但是，有一个这些网站建议实施基于脚本的解决方案来添加 nofollow 。

But then, there are these sites that suggest implementing a script-based solution to add nofollow.

现在我对目前对 nofollow 的理解并不好，原因有两个：

Now that just doesn't jive well with my current understanding of nofollow, for two reasons:

1. 如上所述，当蜘蛛抓取您的网页时，链接不存在。所以 nofollow 没有意义，因为就蜘蛛而言，毕竟没有什么可以遵循的。

1. As mentioned, the links aren't there when a spider crawls your page. So it doesn't make sense to nofollow it, because as far as the spider is concerned, there isn't anything to follow after all.

关于静态链接，蜘蛛无法运行脚本在您的标记上添加 nofollow ，因此链接指向蜘蛛可以关注将不会被修改，因此，跟随链接。

Regarding static links, a spider wouldn't be able to run the script to add nofollow on your markup, so links that a spider can follow will be unmodified, and therefore, are follow links.

我在这里遗漏了什么吗？ 使用Javascript动态地将 nofollow 添加到链接是否真的有用？

Am I missing something here? Is it actually useful to dynamically add nofollow to links using Javascript?

推荐答案

从访问Google的Matt Cutts （强调我的）：

有一段时间，我们在JavaScript中扫描，我们正在寻找
for链接。谷歌已经变得更聪明，可以执行一些JavaScript的
。我不会说我们执行所有JavaScript，所以
有些条件我们不执行JavaScript。
当然有一些常见的，众所周知的JavaScript内容，例如
Google Analytics，你甚至不想执行这些内容，因为你b $ b不想尝试从Googlebot生成虚假访问我们的Google Analytics（分析）为
。

For a while, we were scanning within JavaScript, and we were looking for links. Google has gotten smarter about JavaScript and can execute some JavaScript. I wouldn't say that we execute all JavaScript, so there are some conditions in which we don't execute JavaScript. Certainly there are some common, well-known JavaScript things like Google Analytics, which you wouldn't even want to execute because you wouldn't want to try to generate phantom visits from Googlebot into your Google Analytics.

我们有能力在我们需要或想要的
时执行大部分JavaScript。如果您通过JavaScript宣传
，请注意以下事项：您可以在JavaScript链接上使用 NoFollow

We do have the ability to execute a large fraction of JavaScript when we need or want to. One thing to bear in mind if you are advertising via JavaScript is that you can use NoFollow on JavaScript links

关于该主题的其他辩论： https://webmasters.stackexchange .com / questions / 5653 / do-google-spider-render-javascript 。

Additional debate on the topic: https://webmasters.stackexchange.com/questions/5653/does-the-google-spider-render-javascript.

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