For the test to be succesful, the following content should get indexed. This experiment writes a string into a DIV element with Javascript synchronously. You can also download the source code, so you can repeat it yourself. We let the experiment run for several weeks, and these are the results. After indexing by the search bots, you can use this string to validate if the associated search results are showing up or not by simply performing a search query in each search engine - proving the Javascript indexing capabilities of each of those. Experiment methodĮach experiment consists of a sentence with a unique string that gets injected by Javascript, using several different techniques.

In summer 2018, we tested Google, Bing (and Yahoo), Yandex and Baidu. Following up on our earlier experiments and for the purpose of validating the technical concepts behind our personalization platform, here are the results of a series of experiments to see what gets indexed and what doesn't if Javascript is used to inject content in your page.

Javascript searching