index.html

<html>
    <head>
        <script src="lib/three.min.js"></script>
        <script src="lib/orbitControls.js"></script>

        <script type="x-shader/x-vertex" id="vertexShader">
            varying vec3 worldPosition;
            void main() {
                worldPosition = position;
                gl_Position = projectionMatrix *
                            modelViewMatrix *
                            vec4(position,1.0);
            }
        </script>

        <script type="x-shader/x-fragment" id="fragmentShader">
            // Assume a cube from (0,0,0) to (1,1,1)
            varying vec3 worldPosition;
            void main(){
                gl_FragColor = vec4(worldPosition.zxy, 1 );
            }
        </script>
    </head>

    <body>
    <script src="index.js"></script>
    </body>
</html>