Threejs / Raycast doesn't compute intersection with my cube - three.js

Question

Here is my js files. It works. When I click on the cube, it goes inside raycast function, but doesn't enter the for loop and console.log( intersects[ 0 ] ) gives undefined
let camera, scene, renderer;
let mesh, mesh_green;
let raycaster, mouse = { x : 0, y : 0 };
init();
function init() {
camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 1, 1000 );
camera.position.z = 40;
scene = new THREE.Scene();
const geometry = new THREE.BoxGeometry( 1, 1, 1 );
const material = new THREE.MeshBasicMaterial( { color: "red" } );
mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
mesh.position.set( 0, 10, 0 );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
raycaster = new THREE.Raycaster();
renderer.domElement.addEventListener( 'click', raycast, false );
function raycast ( e ) {
mouse.x = ( e.clientX / window.innerWidth ) * 2 - 1;
mouse.y = - ( e.clientY / window.innerHeight ) * 2 + 1;
console.log( "raycast" , e.clientX, mouse.x, window.innerWidth);
raycaster.setFromCamera( mouse, camera );
const intersects = raycaster.intersectObjects( scene.children );
for ( let i = 0; i < intersects.length; i++ ) {
console.log( intersects[ i ] );
}
}

Answer 1

It seems your code works by using a latest version of three.js. I've just refactored/simplified it a bit.
let camera, scene, renderer;
let mesh;
let raycaster, pointer = new THREE.Vector2();
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera(35, window.innerWidth / window.innerHeight, 1, 1000);
camera.position.z = 40;
scene = new THREE.Scene();
const geometry = new THREE.BoxGeometry();
const material = new THREE.MeshBasicMaterial({
color: "red"
});
mesh = new THREE.Mesh(geometry, material);
mesh.position.set(0, 10, 0);
scene.add(mesh);
renderer = new THREE.WebGLRenderer({antialias: true});
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
raycaster = new THREE.Raycaster();
renderer.domElement.addEventListener('pointerdown', raycast);
}
function raycast(e) {
pointer.x = (e.clientX / window.innerWidth) * 2 - 1;
pointer.y = -(e.clientY / window.innerHeight) * 2 + 1;
raycaster.setFromCamera(pointer, camera);
const intersects = raycaster.intersectObject(scene);
for (let i = 0; i < intersects.length; i++) {
console.log(intersects[i]);
}
}
function animate() {
requestAnimationFrame(animate);
mesh.rotation.x += 0.01;
mesh.rotation.y += 0.02;
renderer.render(scene, camera);
}
body {
margin: 0;
}
<script src="https://cdn.jsdelivr.net/npm/three#0.140.2/build/three.min.js"></script>