title: What does it mean to say nodeJS is built on the V8 engine?
body: <p>I'm beginner to MEAN stack, while studying NodeJS, I'm came up with the following statement that's taking my mind</p>
  
  <blockquote>
    <p>Node.js is a very powerful JavaScript-based framework/platform built
    on Google Chrome's JavaScript V8 Engine.</p>
  </blockquote>
  
  <p>but what exactly does it mean by </p>
  
  <blockquote>
    <p>built on Google Chrome's JavaScript V8 Engine. </p>
  </blockquote>
  
  <p>and if it's built on Chrome's JS V8 Engine, why does it works on Firefox as well?</p>