How to change width of CubeGeometry with Three.js? - animation

Question

I have a cube geometry and a mesh, and i don't know how to change the width (or height... i can change x, y and z though).
Here's a snippet of what i have right now:
geometry = new THREE.CubeGeometry( 200, 200, 200 );
material = new THREE.MeshBasicMaterial( { color: 0xff0000, wireframe: true } );
mesh = new THREE.Mesh( geometry, material );
// WebGL renderer here
function render(){
mesh.rotation.x += 0.01;
mesh.rotation.y += 0.02;
renderer.render( scene, camera );
}
function changeStuff(){
mesh.geometry.width = 500; //Doesn't work.
mesh.width = 500; // Doesn't work.
geometry.width = 500; //Doesn't work.
mesh.position.x = 500// Works!!
render();
}
Thanks!
EDIT
Found a solution:
mesh.scale.x = 500;

Answer 1

Just to complete comment and solution from question (and have an answer present with example code):
// create a cube, 1 unit for width, height, depth
var geometry = new THREE.CubeGeometry(1,1,1);
// each cube side gets another color
var cubeMaterials = [
new THREE.MeshBasicMaterial({color:0x33AA55, transparent:true, opacity:0.8}),
new THREE.MeshBasicMaterial({color:0x55CC00, transparent:true, opacity:0.8}),
new THREE.MeshBasicMaterial({color:0x000000, transparent:true, opacity:0.8}),
new THREE.MeshBasicMaterial({color:0x000000, transparent:true, opacity:0.8}),
new THREE.MeshBasicMaterial({color:0x0000FF, transparent:true, opacity:0.8}),
new THREE.MeshBasicMaterial({color:0x5555AA, transparent:true, opacity:0.8}),
];
// create a MeshFaceMaterial, allows cube to have different materials on each face
var cubeMaterial = new THREE.MeshFaceMaterial(cubeMaterials);
var cube = new THREE.Mesh(geometry, cubeMaterial);
cube.position.set(0,0,0);
scene.add( cube );
cube.scale.x = 2.5; // SCALE
cube.scale.y = 2.5; // SCALE
cube.scale.z = 2.5; // SCALE
A slightly advanced, dynamic example (still the same scaling) implemented here:

Answer 2

You can dispose the geometry of cube and affect the new one like this :
let new_geometry = new THREE.CubeGeometry(500,200,200);
geometry.dispose();
cube.geometry = new_geometry;

Answer 3

Scale properties can be used to for changing width, height and and depth of cube.
//creating a cube
var geometry = new THREE.BoxGeometry(1,1,1);
var material = new THREE.MeshBasicMaterial({color:"white"});
var cube = new THREE.Mesh(geometry, material);
//changing size of cube which is created.
cube.scale.x = 30;
cube.scale.y = 30;
cube.scale.z = 30;