title: Access array inside an object
body: <pre><code> var b = {
    maths:[12,23,45],
    physics:[12,23,45],
    chemistry:[12,23,45]
  };
  </code></pre>
  
  <p>I want to access array in object b. ie, maths, physics, chemistry .
  This may be a simple question but i am learning....Thanks</p>