V8 is an open-source engine implementing JavaScript through ECMAScript and also executing WebAssembly. It can be embedded in applications, so the engine and the application supplying its environment are distinct components.^[ref]

For a simple language-level example, [1, 2, 3].map(x => x * x) evaluates to an array containing 1, 4, 9. The specified array and multiplication behavior belongs to ECMAScript; V8 supplies an implementation of that behavior. The same expression does not require a document or a web browser.

The project's d8 developer shell supplies a small environment for running programs. A file containing console.log(6 * 7); prints 42 when run in that shell. The multiplication is language behavior, whereas the output facility is supplied by the environment.^[ref]

V8 includes Ignition, a register-based interpreter. Interpreter machinery, bytecode and compilation strategies concern how an engine executes a program, rather than changing the program's specified mathematical result.^[ref]

An embedding application can supply additional objects and functions. A Document Object Model operation therefore depends on a suitable host, not merely on the presence of V8. Likewise, a performance comparison must name the engine version, workload and measurement conditions rather than treating one fast numerical expression as a measurement of an entire application.

JavaFX PhongMaterial is the JavaFX material class for local lighting based on the Phong reflection model. It combines diffuse and specular components, colors and texture maps to determine a rendered surface's appearance. When a diffuse color and diffuse map are both supplied, their components multiply rather than one simply replacing the other.^[ref]

For example, a green diffuse color tints an image texture green, while changing specular power changes highlight concentration. A high value produces a narrower highlight; it does not turn the object into a mirror of the surrounding scene. The official class documentation explicitly excludes environment-mirror behavior and refraction effects for this material. Consequently a glossy-looking object is an approximation supplied by a lighting model, not a simulation of every optical interaction.