title: Debugging JavaScript REPL-style?
body: <p>Is there any sort of interactive debugger for JavaScript? I'm imagining something like a web page on the left, and a REPL interface on the right.</p>
  
  <p>Or maybe even without having a web page, so I can just play around with the JavaScript language.</p>
  
  <p>Something that doesn't require I refresh the web page with breakpoints in Firebug or VS to examine locals and type code into a Watch window. Maybe I just need to learn Firebug better?</p>
  
  <p>JavaScript doesn't have to be <em>compiled</em>, after all.</p>
  
  <p>Kind of like LinqPad but for JavaScript maybe?</p>
  
  <p>Anyone follow me here?</p>