Javascript default functions?
<p>In Javascript, like <code>setInterval(draw,20)</code> you don't include anything like in C#. You can just use the function. The function is on the <code>Windows</code> object of the browser.</p>

<ol>
<li><p>Can the following objects and its functions be called without any pre-definitions?</p>

<pre><code>Window
Navigator
Screen
History
Location
</code></pre></li>
<li><p>Does JavaScript has any built-in functions?</p></li>
</ol>
