JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.1.0.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/dev/build/three.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/6c7f000734f8579da37fb39e5c2e9e5e2dfb14f8/examples/js/cameras/CombinedCamera.js"></script>
<canvas id="can" width="400" height="300"></canvas>

JavaScript

var renderer = new THREE.WebGLRenderer({canvas : $("#can")[0]});
renderer.setSize($("#can").width(), $("#can").height());
var cam = new THREE.PerspectiveCamera(45, $("#can").width() / $("#can").height(), 0.1, 100);
cam.position.set(0,2,6);
cam.quaternion.multiply(new THREE.Quaternion().setFromAxisAngle( new THREE.Vector3( 1, 0, 0 ), -Math.PI/8 ));
var scene = new THREE.Scene();

var geo = new THREE.BoxGeometry(1,1,1);
var mat = new THREE.MeshBasicMaterial({color : 0xff0000});
var msh = new THREE.Mesh(geo,mat);
scene.add(msh);

geo = new THREE.BoxGeometry(1,2,1);
mat = new THREE.MeshBasicMaterial({color : 0xff00ff});
var msh2 = new THREE.Mesh(geo,mat);
msh2.position.set(2,0,0);
scene.add(msh2);

function render() {
	requestAnimationFrame( render );
  msh.rotateX(0.001);
  msh.rotateY(0.002);
  //This won't work!
  var rot = new THREE.Quaternion().copy(msh.rotation);
  msh2.rotation.copy(rot);
  //====
	renderer.render( scene, cam );
}
render();