title: ruby array pack and unpack functionality in javascript?
body: <p>What are the JavaScript functions or libraries that are equivalent to Ruby's pack and unpack functions for the Array class?  I'm particularly interested in converting hex strings to strings.</p>
  
  <pre><code>irb(main):022:0&gt; ["446f67"].pack("H*")
  =&gt; "Dog"
  </code></pre>
  
  <p>I'm not a JavaScript programmer and would rather not roll my own converter if libraries are available.</p>