Marker animation along SVG "path" element with D3.js: animating "path" and marker movement synchronously, marker rotate according to tangent line to path.
Modified http://d3js.org/d3.v3.min.js to a secure url
Modified http://d3js.org/queue.v1.min.js to a secure url
https://d3js.org/d3.v3.min.js
https://d3js.org/queue.v1.min.js