This article by Jake Archibald does a good job of explaining the underlying mechanism used by libraries such as walkway.js: http://jakearchibald.com/2013/animat

This article by Jake Archibald does a good job of explaining the underlying mechanism used by libraries such as walkway.js: http://jakearchibald.com/2013/animated-line-drawing-svg/ http://jakearchibald.com/2013/animated-line-drawing-svg/.