JavaScript is a dialect of the standardized ECMAScript programming language, primarily used for scripting web-pages. Use this tag for questions regarding ECMAScript and its dialects/ implementations: JavaScript, JScript, etc., excluding ActionScript.

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17
votes
4answers
4k views

Does the Google spider render JavaScript?

Does the Google spider knows how to render JavaScript, or only HTML?
47
votes
16answers
2k views

HTML validation: is it worth it?

What are the advantages and disadvantages (if any) of making sure that all pages validate compared to having non-valid HTML that however works on all major browsers? Also, is having valid HTML after ...
3
votes
2answers
246 views

Will AggregateRating markup that is generated dynamically by client side JavaScript show stars on Google search?

Google show stars in Google search with JavaScript dynamically generated rich snippets? I'm thinking about starting a widget that my users will put in their website. My widget will generate rich ...
26
votes
4answers
63k views

How do I set expiration headers for CSS, JS, and Images?

I have recently analysed my website with pagespeed addon on firebug. It suggested me to set expiration on CSS, JS and image files. I am wondering how do i do this?
25
votes
6answers
22k views

How do you exclude yourself from Google Analytics on your website using cookies?

I'm trying to set up an exclusion filter with a browser cookie, so that my own visits to my don't show up in my Google Analytics. I tried 3 different methods and none of them have worked so far. I ...
20
votes
6answers
4k views

Can we ignore visitors without JavaScript enabled?

If you have developed a JavaScript based website, is it worth doing the extra work to make it accessible for visitors who don't have JavaScript enabled? What percentage of visitors are in this ...
14
votes
2answers
5k views

Is this a good approach to image Lazy Loading for SEO?

For images loaded via AJAX, or that I don't want indexed, use the data-* attribute approach: <img data-src="path/to/image.jpg" class="js-lazy-load" /> The javascript maps the data-src ...
19
votes
3answers
7k views

Lazy loading images and effects on SEO

We are using the following technique to lazy load images in our site: For all images we put in the src attribute a url for a default img (i.e. a loader) and put the actual image url in the data-src ...
13
votes
5answers
4k views

Should I worry about people disabling Javascript?

Often when picking new tools and frameworks I see the warning "Will not work if the user has disabled Javascript". I then look at my Javascript powered slideshow, Javascript powered menu, and ...
6
votes
4answers
668 views

Will JavaScript (document.write) content be indexed by search engines?

I have an external JS file embedding some content inline in a web page. Basically it just does a document.write("my content") via a script tag and loaded externally with the src attribute. Any ...
5
votes
1answer
719 views

How to overcome politics of the net (Google translate code refuses to work from a specific region)

According to the FAQ's I am not sure if my question is a ok to ask or will be closed or should I post it in the meta or even I would blame some one for downvoting it. However it is one that has been ...
4
votes
3answers
396 views

How do I prevent Google from indexing text that is generated by JavaScript?

Google is executing the JavaScript on my password creator website and indexing the random passwords that get generated by the JavaScript. The random text that is generated could look spammy to ...
3
votes
1answer
378 views

Collapsible menu and amount of links in a web page

One of my pages contain three levels of a collapsible menu (JS + CSS from mycssmenu.com). There are a dozen first level items displayed to users, each one with various second level items, and finally ...
2
votes
1answer
69 views

Can writing a floating navbar's HTML at the bottom of the page increase SEO?

In my entry into SEO (and admittedly the subject is in constant change) I had read SEO Warrior. In that book it explained the concept of increasing a page's SEO value by placing navigation at the ...
1
vote
3answers
825 views

Will my new HTML5 website decrease my Google ranking?

I have a traditional HTML website that loads pages/sections of the site when people click on menu items. Pretty standard. Currently, I'm working on relaunching my website with a brand new HTML5 code &...
13
votes
8answers
4k views

Is inline JavaScript good or bad?

I've currently switched from WordPress to Yii framework and an external developer is rebuilding my site. One thing I notice is that each time he invokes AJAX / jQuery the Yii way, it embeds inserts ...
4
votes
1answer
2k views

Dictionary API for a website?

I would like to have a dictionary for my website where the user can easily fill in a word or better yet right click a word and get the definition right there on the page or something along those lines....
24
votes
4answers
3k views

Why insert static files (CSS, images, JavaScript, ECC) in a subdomain?

Why so many big and little sites inserts static files (CSS, images, JavaScript, ECC) in a subdomain like media.example.com or s2.static.example.com? What are the advantages? Why not just a directory ...
14
votes
5answers
2k views

What's the best way to load Javascript into a page to optimize performance?

Is there a way to load my JavaScript into a page that will make it load faster?
10
votes
2answers
521 views

Google indexing pages with #! although we don't have any

Our company has developed a Single Page Application using AngularJS and its routing. Google indexed our site decently with JavaScript but it did not index some pages very well so we have developed an ...
8
votes
1answer
1k views

Does adding external images or javascript to a website affect its SEO?

When adding images to your site, is it bad to use an image located on another site: <img src='http://www.some_other_site.com/image.jpg'> The same goes for javascript, is it bad to link to ...
7
votes
3answers
4k views

Would redirecting to a new home page affect SEO?

I'm currently working on a new landing page for this site. I want the landing page to replace the existing front page of the site. However I don't want to lose the Page Rank of the current front page -...
4
votes
2answers
222 views

Is making AJAX site crawlable AND degrading gracefully with JS turned off possible?

According to this spec, making AJAX site crawlable by Googlebot means that you have to use hashbang (#!) links in it which means it won't degrade gracefully when JS is turned off. This might mean that ...
3
votes
2answers
5k views

Free/cheap Whois Api [closed]

Is there a free API where I can pull whois data and server location data? (similar to who.is)
5
votes
3answers
327 views

Best approach to have Google index content primarily generated by Javascript

I'm developing an app where customers can drop in a Javascript tag onto their website, and it will generate content. What is the best approach to have Google index this content and associate it with ...
5
votes
3answers
12k views

Possible to only load specifiv div of a website?

I have this project i'm working on and id like to add a really small list of nearby places using facebooks places in an iframe feature from touch.facebook.com I can easily just use touch.facebook.com/#...
3
votes
1answer
638 views

Google follows JavaScript string as relative path - produces 404 error

This is my first question on here so I hope I'm not breaking any rules, but I have a problem: I have a site that uses an Adobe Site Catalyst for its online analytics. The suite supports tagging ...
3
votes
1answer
1k views

Can I reposition AdSense ads with Javascript (for responsive purposes)?

I have a responsive blog where ads are displayed in the sidebar. On mobile devices however, the sidebar is pushed to the bottom below the posts. So what I'd like to do is move the ads from the ...
3
votes
2answers
723 views

Google JSAPI Auto-Loading

When using Google's JSAPI Auto-Loading system - is there a way to get the returned file with all the JavaScript (combined) in one HTTP request? At the minute is just calls the load routines (with ...
3
votes
2answers
588 views

How can I create links in javascript that are crawlable by search engines?

If I use JavaScript + jQuery, for example, does links inserted in $(document).ready() will be available for crawling? How can I insert crawlable links in JavaScript?
3
votes
2answers
172 views

How can I get Google to index content that is written into the page with JavaScript?

I have a website that focuses on charts and graphs. The graphs on the site are drawn using JavaScript, but contain keywords that I would like to have indexed. For example, here is a screenshot of ...
1
vote
2answers
381 views

Litmus test to determine if javascript content is crawlable

Already read this: How can I create links in javascript that are crawlable by search engines? I make the assumption that if you view source on a page and can find content / links hidden by javascript ...
0
votes
1answer
303 views

addthis button default message

How to set default message, I am using addthis button for invite a friend Email on a website. that default message should also work if user choose gmail, yahoo etc from addthis box.
0
votes
2answers
793 views

How to find a good photo gallery for my website? [duplicate]

Possible Duplicate: Which Content Management System (CMS) should I use? For my website I'm searching for a really simple gallery module that looks like the one use by Dropbox. But I'd like to ...