JavaScript Crawling Overview

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Every non-AMP page (i.e. desktop, mobile) has a tag pointing to the corresponding AMP URL.
Every AMP page has a rel="canonical" tag that points to the corresponding desktop page.
Any AMP page that doesn't have a corresponding desktop URL has a self-referencing canonical tag.
This tool will only report existing errors, not armenia number data . For example, if your product page template does not include the product's structured data schema, the tool will not report any errors. Therefore, in addition to checking for errors, you should also ensure that each page template includes the appropriate structured data markup for its content type.




You should test the template for each page of your new site to make sure that Google will be able to crawl content that requires JavaScript parsing. If you are able to use Google's Fetch and Render tool on your staging site, you should definitely do so. Otherwise, follow Justin Bragg's advice and do some manual testing .


As Bartosz Góralewicz's tests proved, even if Google is able to crawl and index JavaScript-generated content, that doesn't mean it's able to crawl JavaScript content across all major JavaScript frameworks. The following table summarizes Bartosz's findings, which show that some JavaScript frameworks are not SEO-friendly, with AngularJS being the most problematic at the moment.


Bartosz also found that other search engines (like Bing, Yandex, and Baidu) really struggle with indexing JavaScript-generated content , making it important to know if your site's traffic relies on any of these search engines.


Hopefully, this is something that will improve over time, but with the growing popularity of JavaScript frameworks in web development, this should be high on your checklist.