• BBgmoro

        See all notifications

        Skip to content
        Moz logo Menu open Menu close
        • Products
          • Moz Pro
          • Moz Pro Home
          • Moz Local
          • Moz Local Home
          • STAT
          • Moz API
          • Moz API Home
          • Compare SEO Products
          • Moz Data
        • Free SEO Tools
          • Domain Analysis
          • Keyword Explorer
          • Link Explorer
          • Competitive Research
          • MozBar
          • More Free SEO Tools
        • Learn SEO
          • Beginner's Guide to SEO
          • SEO Learning Center
          • Moz Academy
          • MozCon
          • Webinars, Whitepapers, & Guides
        • Blog
        • Why Moz
          • Digital Marketers
          • Agency Solutions
          • Enterprise Solutions
          • Small Business Solutions
          • The Moz Story
          • New Releases
        • Log in
        • Log out
        • Products
          • Moz Pro

            Your all-in-one suite of SEO essentials.

          • Moz Local

            Raise your local SEO visibility with complete local SEO management.

          • STAT

            SERP tracking and analytics for enterprise SEO experts.

          • Moz API

            Power your SEO with our index of over 44 trillion links.

          • Compare SEO Products

            See which Moz SEO solution best meets your business needs.

          • Moz Data

            Power your SEO strategy & AI models with custom data solutions.

          Turn SEO data into actionable content briefs

          Turn SEO data into actionable content briefs

          Learn more
        • Free SEO Tools
          • Domain Analysis

            Get top competitive SEO metrics like DA, top pages and more.

          • Keyword Explorer

            Find traffic-driving keywords with our 1.25 billion+ keyword index.

          • Link Explorer

            Explore over 40 trillion links for powerful backlink data.

          • Competitive Research

            Uncover valuable insights on your organic search competitors.

          • MozBar

            See top SEO metrics for free as you browse the web.

          • More Free SEO Tools

            Explore all the free SEO tools Moz has to offer.

          Let your business shine with Listings AI

          Let your business shine with Listings AI

          Get found
        • Learn SEO
          • Beginner's Guide to SEO

            The #1 most popular introduction to SEO, trusted by millions.

          • SEO Learning Center

            Broaden your knowledge with SEO resources for all skill levels.

          • On-Demand Webinars

            Learn modern SEO best practices from industry experts.

          • How-To Guides

            Step-by-step guides to search success from the authority on SEO.

          • Moz Academy

            Upskill and get certified with on-demand courses & certifications.

          • MozCon

            Save on Early Bird tickets and join us in London or New York City

          Access 20 years of data with flexible pricing
          Moz API

          Access 20 years of data with flexible pricing

          Find your plan
        • Blog
        • Why Moz
          • Digital Marketers

            Simplify SEO tasks to save time and grow your traffic.

          • Small Business Solutions

            Uncover insights to make smarter marketing decisions in less time.

          • Agency Solutions

            Earn & keep valuable clients with unparalleled data & insights.

          • Enterprise Solutions

            Gain a competitive edge in the ever-changing world of search.

          • The Moz Story

            Moz was the first & remains the most trusted SEO company.

          • New Releases

            Get the scoop on the latest and greatest from Moz.

          Surface actionable competitive intel
          New Feature

          Surface actionable competitive intel

          Learn More
        • Log in
          • Moz Pro
          • Moz Local
          • Moz Local Dashboard
          • Moz API
          • Moz API Dashboard
          • Moz Academy
        • Avatar
          • Moz Home
          • Notifications
          • Account & Billing
          • Manage Users
          • Community Profile
          • My Q&A
          • My Videos
          • Log Out

        The Moz Q&A Forum

        • Forum
        • Questions
        • My Q&A
        • Users
        • Ask the Community

        Welcome to the Q&A Forum

        Browse the forum for helpful insights and fresh discussions about all things SEO.

        1. Home
        2. SEO Tactics
        3. Technical SEO
        4. OK to block /js/ folder using robots.txt?

        Moz Q&A is closed.

        After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.

        OK to block /js/ folder using robots.txt?

        Technical SEO
        4
        4
        3212
        Loading More Posts
        • Watching

          Notify me of new replies.
          Show question in unread.

        • Not Watching

          Do not notify me of new replies.
          Show question in unread if category is not ignored.

        • Ignoring

          Do not notify me of new replies.
          Do not show question in unread.

        • Oldest to Newest
        • Newest to Oldest
        • Most Votes
        Reply
        • Reply as question
        Locked
        This topic has been deleted. Only users with question management privileges can see it.
        • AndreVanKets
          AndreVanKets last edited by

          I know Matt Cutts suggestions we allow bots to crawl css and javascript folders (http://www.youtube.com/watch?v=PNEipHjsEPU)

          But what if you have lots and lots of JS and you dont want to waste precious crawl resources?

          Also, as we update and improve the javascript on our site, we iterate the version number ?v=1.1... 1.2... 1.3... etc.

          And the legacy versions show up in Google Webmaster Tools as 404s. For example:

          http://www.discoverafrica.com/js/global_functions.js?v=1.1
          http://www.discoverafrica.com/js/jquery.cookie.js?v=1.1
          http://www.discoverafrica.com/js/global.js?v=1.2
          http://www.discoverafrica.com/js/jquery.validate.min.js?v=1.1
          http://www.discoverafrica.com/js/json2.js?v=1.1

          Wouldn't it just be easier to prevent Googlebot from crawling the js folder altogether?

          Isn't that what robots.txt was made for?

          Just to be clear - we are NOT doing any sneaky redirects or other dodgy javascript hacks.

          We're just trying to power our content and UX elegantly with javascript.

          What do you guys say:

          Obey Matt? Or run the javascript gauntlet?

          1 Reply Last reply Reply Quote 0
          • katemorris
            katemorris last edited by

            Hey!

            So, I listened to Matt's video. I see his point about wanting to crawl the JS files just in case something tricky is going on. Do understand that this is a risk you take. I don't see an issue blocking crawling of those files from a logical perspective, but if you or someone that takes over for you in the future does do something sneaky with JS and you are caught ... plus you have blacked access to the offending files ... it is going to take a lot more work to get back in good graces with them.

            It's like a cop searching your car. You have every right to ban them from doing so, but if you have nothing to hide, why make trouble? Matt is right, banning crawling of these files is not going to save you much but if you think it's an issue, feel free. Just know that they might take it as a possible flag in the future.

            Kate

            1 Reply Last reply Reply Quote 2
            • KeriMorgret
              KeriMorgret @mediabase last edited by

              Harald, it looks like the response you've quoted is from http://groups.google.com/a/googleproductforums.com/forum/#!category-topic/webmasters/crawling-indexing--ranking/9MGYEoROdkg, which is a question about a menu that has javascript. I think this poster has a slightly different question. I'll ask another associate to come on in and take a look.

              1 Reply Last reply Reply Quote 1
              • mediabase
                mediabase last edited by

                Hi Discover,I think that whenever we access the web pages , we have seen number of times that there is run time error & they asking for debug. This error message is helpful for the developers only but not for the users.

                I think that you should please refer to the following link:

                Blocking Javascript

                The truth about non javascript

                I hope that above content help to solve your query.

                KeriMorgret 1 Reply Last reply Reply Quote 0
                • 1 / 1
                • First post
                  Last post

                Browse Questions

                Explore more categories

                • Moz Tools

                  Chat with the community about the Moz tools.

                • SEO Tactics

                  Discuss the SEO process with fellow marketers

                • Community

                  Discuss industry events, jobs, and news!

                • Digital Marketing

                  Chat about tactics outside of SEO

                • Research & Trends

                  Dive into research and trends in the search industry.

                • Support

                  Connect on product support and feature requests.

                • See all categories

                Related Questions

                • Nomader

                  Crawl solutions for landing pages that don't contain a robots.txt file?

                  My site (www.nomader.com) is currently built on Instapage, which does not offer the ability to add a robots.txt file. I plan to migrate to a Shopify site in the coming months, but for now the Instapage site is my primary website. In the interim, would you suggest that I manually request a Google crawl through the search console tool? If so, how often? Any other suggestions for countering this Meta Noindex issue?

                  Technical SEO | | Nomader
                  1
                • hampgunn

                  SEO advice on ecommerce url structure where categories contain "/c/"

                  Hi! We use Hybris as plattform and I would like input on which url to choose. We must keep "/c/" before the actual category. c stands for category. I.e. this current url format will be shortened and cleaned:
                  https://www.granngarden.se/Sortiment/Husdjur/Hund/Hundfoder-%26-Hundmat/c/hundfoder To either: a. 
                  https://www.granngarden.se/husdjur/hund/hundfoder/c/hundfoder b.
                  https://www.granngarden.se/husdjur/hund/c/hundfoder (hundfoder means dogfood) The question is whether we should keep the duplicated category name (hundfoder) before the "/c/" or not. Will there be SEO disadvantages by removing the duplicate "hundfoder" before the "/c/"? I prefer the shorter version ofc, but do not want to jeopardize any SEO rankings or send confusing signals to search engines or customers due to the "/c/" breaking up the url breadcrumb. What do you guys say and prefer from the above alternatives? Thanks /Hampus

                  Technical SEO | | hampgunn
                  0
                • musthavemarketing

                  Express js and SEO?

                  Hi fellow Mozzers, I have been tasked with providing some SEO recommendations for a website that is to be built using express.js and Angular.  I wondered whether anyone has had any experience in such a framework? On checking a website built in this and viewing as a GoogleBot etc using the following tools it appears as though most of the content is invisible: http://www.webconfs.com/search-engine-spider-simulator.php http://www.browseo.net/ Obviously this is a huge issue and wonder if there are any workarounds, or reccomendations to assist (even if means moving away from this  - would love to hear about it)

                  Technical SEO | | musthavemarketing
                  2
                • Whittie

                  Robots.txt on subdomains

                  Hi guys! I keep reading conflicting information on this and it's left me a little unsure. Am I right in thinking that a website with a subdomain of shop.sitetitle.com will share the same robots.txt file as the root domain?

                  Technical SEO | | Whittie
                  0
                • inlinear

                  Correct linking to the /index of a site and subfolders: what's the best practice? link to: domain.com/ or domain.com/index.html ?

                  Dear all, starting with my .htaccess file: RewriteEngine On
                  RewriteCond %{HTTP_HOST} ^www.inlinear.com$ [NC]
                  RewriteRule ^(.*)$ http://inlinear.com/$1 [R=301,L] RewriteCond %{THE_REQUEST} ^./index.html 
                  RewriteRule ^(.)index.html$ http://inlinear.com/ [R=301,L] 1. I redirect all URL-requests with www. to the non www-version...
                  2. all requests with "index.html" will be redirected to "domain.com/" My questions are: A) When linking from a page to my frontpage (home) the best practice is?: "http://domain.com/" the best and NOT: "http://domain.com/index.php" B) When linking to the index of a subfolder "http://domain.com/products/index.php" I should link also to: "http://domain.com/products/" and not put also the index.php..., right? C) When I define the canonical ULR, should I also define it just: "http://domain.com/products/" or in this case I should link to the definite file: "http://domain.com/products**/index.php**" Is A) B) the best practice? and C) ? Thanks for all replies! 🙂
                  Holger

                  Technical SEO | | inlinear
                  0
                • isntworkdull

                  Would using javascript onclick functions to override href target be ok?

                  Hi all, I am currently working on a new search facility for me ecommerce site... it has very quickly dawned on me that this new facility is far better than my standard product pages - from a user point of view - i.e lots of product attributes for customers to find what they need faster, ability to compare products etc... All in all just better. BUT NO SEO VALUE!!! i want to use this search facility instead of my category/product pages... however as they are search pages i have "robots noindex them" and dont think its wise to change that... I have spoken to the developers of this software and they suggested i could use some javascript in the navigation to change the onlclick function to take the user to the search equivelant of the page... They said this way my normal pages are the ones that are still indexed by google etc, but the user has the benefit of using the improved search pages... This sounds perfect, however it also sounds a little deceptive... and i know google has loads of rules about these kinds of things, the last thing i want is to get any kind of penalty or any negative reaction from an SEO point of view... I am only considering this as it will improve the user experience on my website... Can  any one advise if this is OK, or a "no no"... P.s for those wondering i use an "off the shelf" cart system and it would cost me an arm and a leg to have these features built into my actual category  / product pages.

                  Technical SEO | | isntworkdull
                  0
                • irvingw

                  Allow or Disallow First in Robots.txt

                  If I want to override a Disallow directive in robots.txt with an Allow command, do I have the Allow command before or after the Disallow command? example: Allow: /models/ford///page* Disallow: /models////page

                  Technical SEO | | irvingw
                  0
                • JordanJudson

                  Should I set up a disallow in the robots.txt for catalog search results?

                  When the crawl diagnostics came back for my site its showing around 3,000 pages of duplicate content. Almost all of them are of the catalog search results page. I also did a site search on Google and they have most of the results pages in their index too. I think I should just disallow the bots in the /catalogsearch/ sub folder, but I'm not sure if this will have any negative effect?

                  Technical SEO | | JordanJudson
                  0

                Get started with Moz Pro!

                Unlock the power of advanced SEO tools and data-driven insights.

                Start my free trial
                Products
                • Moz Pro
                • Moz Local
                • Moz API
                • Moz Data
                • STAT
                • Product Updates
                Moz Solutions
                • SMB Solutions
                • Agency Solutions
                • Enterprise Solutions
                • Digital Marketers
                Free SEO Tools
                • Domain Authority Checker
                • Link Explorer
                • Keyword Explorer
                • Competitive Research
                • Brand Authority Checker
                • Local Citation Checker
                • MozBar Extension
                • MozCast
                Resources
                • Blog
                • SEO Learning Center
                • Help Hub
                • Beginner's Guide to SEO
                • How-to Guides
                • Moz Academy
                • API Docs
                About Moz
                • About
                • Team
                • Careers
                • Contact
                Why Moz
                • Case Studies
                • Testimonials
                Get Involved
                • Become an Affiliate
                • MozCon
                • Webinars
                • Practical Marketer Series
                • MozPod
                Connect with us

                Contact the Help team

                Join our newsletter
                Moz logo
                © 2021 - 2026 SEOMoz, Inc., a Ziff Davis company. All rights reserved. Moz is a registered trademark of SEOMoz, Inc.
                • Accessibility
                • Terms of Use
                • Privacy

                Looks like your connection to Moz was lost, please wait while we try to reconnect.