Indeed. See http://bl.ocks.org/mbostock/4062045 for Mike Bostock's example of a simple force-directed graph including the D3.js code.

(BTW, see http://bl.ocks.org/mbostock for an impressive collection of visualizations made with D3.js. Impressive both in terms of size of the collection, quality of the code and clarity of the visualizations.)

Well, it (slightly) predates D3, for what it's worth:

https://github.com/dhotson/springy/commits/master?page=4 https://github.com/mbostock/d3/commits/master?page=91

If all you need is spring layout without the rest of D3, Springy might be a better fit.

It's an inferior subset of D3, however HN will upvote anything with JS in the title.

Like I just upvoted your comment? Because it had JS in the body... Just kidding, I agree completely with you. It's currently very "in vogue" to promote anything remotely related to JS or Node. I always say, right tool for the job, and if that happens to be JS/Node, great. However, sometimes it feels like these JS pushers have JS as their proverbial hammer, and every single problem they encounter is a nail to be hammered (with JS).