How to setup inverse kinematics in Three.js

skeleton
bones
rigging
animation

#1

Been looking for a way to setup Inverse Kinematics in Three.js. I found this library https://jsantell.github.io/THREE.IK/ but it seems to be still work in progress.

Then I found this in the three js docs. https://threejs.org/docs/index.html#examples/animations/CCDIKSolver.iks

I don’t really understand how it works yet. But, is this the only thing I need to setup an IK rig? Can anyone cite any good source for learning this how to use this?