title: How do I use the "arguments" key on the function object?
body: <p>If I type this and check it out in my Chrome console:</p>
  
  <pre><code>function f(){}
  console.dir(f);
  </code></pre>
  
  <p>What is displayed are these keys:</p>
  
  <pre><code>&gt; arguments
  &gt; caller
  &gt; length
  &gt; name
  &gt; prototype
  &gt; __proto__
  </code></pre>
  
  <p>Now, I'm curious if the arguments key on the constructor function is there to aid me in some way visually to see the arguments that are passed to a function, but everytime I pass an argument to a function it fires it off automatically:</p>
  
  <pre><code>function f(a){alert(a)}
  console.dir(f("test"));
  </code></pre>
  
  <p>So, it seems quite useless as an analytic tool.  Is this key just here to temporarily hold the arguments and nothing more just for the sake of passing arguments?  Or is there something else to this key?  I'm sure this is probably a dumb question but I'm curious.</p>