Is JavaScript executed by Diffbot?

How does Diffbot API handle content that is dynamically added via JavaScript after the HTML has loaded? Does Diffbot capture this dynamic content or just the initially loaded HTML?

Answer №1

Absolutely, Diffbot has the capability to detect JavaScript generated content.

Diffbot functions as a visually intelligent robot, going beyond simply analyzing the source code of a webpage at the specified URL. It utilizes a streamlined version of Chrome that purposely leaks memory and operates inefficiently in order to achieve maximum speed. By rendering the requested page in this customized browser, Diffbot is able to visually analyze and identify the components it expects to find.

It's worth mentioning that while the Article API does not run JavaScript code for individual requests, it does so for bulk API calls, Crawlbot tasks, and as part of the Analyze API (presently in beta). To enable full-page renders with JavaScript enabled for the Article API on a per-domain basis, users should reach out to the Diffbot team for permission.

Another important detail to consider is that Crawlbot overlooks links generated by JavaScript. Therefore, if links are dynamically added to a page using JS, Crawlbot will not be able to detect them. However, Crawlbot is capable of executing JavaScript when called by other APIs.

As for the Custom API, the preview window within the development interface may not display JavaScript content accurately, but the content will be accessible when utilizing APIs for the designated URL. The Diffbot team is actively working to resolve this discrepancy.

Source: Diffbot Support

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