It was a little challenge for me. I got an example from this question and tried to create my own realization of the idea, but using VanillaJS.
See the Pen Text particles (canvas, VanillaJS) by Ivan Bogachev (@sfi0zy) on CodePen.
Simple UI framework. RSCSS, REM-based sizes, fluid typography and other nice ideas. This website is powered by it.