5 Reasons why Javascript can be a threat to your SEO blog

By pure coincidence, we have another list post (4 in a row!). Laura Hayes, a new guest poster here, presents quite an interesting topic today.

JavaScript is one of the most common web technologies and many sites use it in order to offer enhanced functionality. However, JavaScript isn’t all that good. In fact, for many sites, including your SEO blog, the use of JavaScript could be a bit of a threat. If you are using WordPress or any other PHP CMS, JavaScript can be bad and it can cause quite a lot of trouble.

JavaScript and WordPress?!

JavaScript can be used on many sites, including sites written in PHP. Usually you can’t embed JavaScript directly in your WordPress blog because of compatibility issues but with the help of containers of different kind, you can do it.

The integration of JavaScript and WordPress isn’t always the most trouble-free. JavaScript can be embedded in your WordPress SEO blog but you need to be careful so that it doesn’t cause functionality and performance issues.

Why JavaScript Could Impact Your SEO Blog Negatively

When you ask a SEO expert about JavaScript, he or she will probably tell you that JavaScript is a SEO disaster. While it isn’t exactly so, JavaScript does have some negative effects on your SEO blog. For instance:

Spiders hate JavaScript. Probably the most devastating effect JavaScript can have on your blog is in terms of SEO ranking. The improper use of JavaScript can affect your rankings with search engines in a negative way. If your JavaScript is not spiderable, then the text inside is lost for search engines. Only this disadvantage of JavaScript is enough to make you think whether you really need this JavaScript functionality or not.
Performance downgrade. JavaScript can slow a site down. If you are hosting your blog with the right WordPress hosting, then it is less likely to experience performance downgrades but still when you use JavaScript, you should expect that this will load the servers and your WordPress installation and as a result, performance might be downgraded.
Security issues. In addition to a performance downgrade, JavaScript could pose security issues. Again, with the right WordPress hosting, when the adequate measures are taken, even if there are security issues stemming from your use of JavaScript, the damage will be minimal. You can always check out email security software.
Platform limitations. Relying on JavaScript for key functionality isn’t a good idea because no matter how popular JavaScript is – JavaScript comes installed by default in almost any browser under almost any platform but don’t bet your life on it – there are many cases when JavaScript can’t be used and this is why these users won’t be able to access the functionality. For instance, mobile devices commonly either have no JavaScript support at all, or come with a very basic JavaScript support.
User bans. Even if the browser of your users supports JavaScript, it still doesn’t mean that your users will use it. While on some browsers JavaScript is enabled by default, on others it isn’t and if your users don’t enable it explicitly, they won’t be able to use it. This means that if you have content inside JavaScript, it will become inaccessible to everybody who doesn’t use JavaScript.

These 5 reasons why JavaScript can be a threat to your SEO blog are pretty serious. Still, nobody says that it’s a horrible thing to use JavaScript as long as you use it wisely. If you know how to deal with the bad sides of JavaScript and don’t rely heavily on it, then JavaScript won’t be that much of a problem for your SEO blog. Just remember not to use JavaScript for everything you can think of because this will certainly lead to problems.

Laura Hayes blogs about ways to make money online and WordPress tutorials. She is a full time Senior Writer for Web Hosting Search, one of the strongest guides for web hosting.

Image created by smemon87.

We offer testking VCP-410 self paced training program for web designers/developer. Download the testking 350-001 tutorials and testking 640-802 study guide to learn about javascript and other web applications for your bolg page.

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This entry was posted on 2010/05/11, 12:01 am and is filed under Leveraging tools, Promoting your site. You can follow any responses to this entry through RSS 2.0. You can leave a response, or trackback from your own site.

94 Comments

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I on’t like very much, but I have advertisers that uses in their banners,could affect one or two of this banners to the SEO of my site?

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- At 2011.09.22 02:39, lameixisolsw said:
  
  Oh, ofcourse CSS and JS files have to be external…
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At 2011.04.25 16:28, Nasif said:

Spiders dosen’t hate , they can’t read it !

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As always, keep it simple principle works for blogs too. If not block completely, minimizing js is the best thing to do. Apart from above points, js files also add to the time it takes to download these files on client. So better stay away from it.

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At 2011.08.11 01:43, How can I make money on the Internet? said:

I think is OK as long as it’s used correctly, but you’re right it can pose issues for web crawlers, since they can’t see . I find it’s best to use if you’re looking to increase conversion rates for affiliate links.. masking links, that sorta thing.
JS is not a problem if its loaded at bottom and minified/combined, served compressed and maybe from a cookieless domain, too.
The problem is the usage of inline JS, badly coded sites where JS is located in the head (where is does not belong), …

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