Link Authority SEO Ranking Factors - Links Embedded in JavaScript
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Most SEOs agree that search engines have a hard time spidering JavaScript. This may be changing as Google advances. Google already can crawl JavaScript forms and has actually admitted that it digs JavaScript to discover new links:
We already do some pretty smart things like scanning JavaScript and Flash to discover links to new web pages - Jayant Madhavan and Alon Halevy, Crawling and Indexing Team
If engineers from a crawling and indexing team say they crawl JavaScript, you'd better believe them. The question is, do JavaScript links pass pagerank? It would make sense to implement this, since JavaScript links are only different from HTML links in that they're JavaScript-based! We may see this very soon.
Google also fills out some JavaScript forms, so beware if some weird stranger fills out your forms in a goofy way:
"...when we encounter a <FORM> element on a high-quality site, we might choose to do a small number of queries using the form. For text boxes, our computers automatically choose words from the site that has the form; for select menus, check boxes, and radio buttons on the form, we choose from among the values of the HTML. Having chosen the values for each input, we generate and then try to crawl URLs that correspond to a possible query a user may have made..."
Page Excluded in Robot.txt file
If a page is excluded in Robot.txt, it is no longer spidered or indexed, nor does it pass pagerank. Getting a link from a robot.txt excluded page is worthless in terms of SEO.
In the fifth article we finish the series with the basics of on-page SEO: title tags, H tags, body, domain name, image, meta tags and more.
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