Video tutorials
Narrated walkthroughs of Open Lab and of building tasks in the lab.js builder. Each has subtitles in 12 languages, chapters and a transcript, the files to follow along directly under the player, and a link to its docs page.
The lab.js builder: a reaction-time task, step by step
lab.js and the builder
3:25 · narrated, with subtitles in 12 languages · recorded in October 2026
A tour of the lab.js builder at builder.open-lab.online: components in a tree, the editor and its tabs, the preview with its data and debug tools, and why a study has to be saved as a file.
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