title: Where can I find a RegEx visualisation tool for JavaScript?
body: <p>I'm debugging and commenting someone else's JavaScript code at the moment but there's some fiendish RegEx in it. While my knowledge of RegEx is fairly good, it would help to have a reliable visualiser to show each RegEx string as a railroad diagram or something similar.</p>
  
  <ul>
  <li><p>I found a plug-in for Eclipse, for use with Java, at <a href="https://stackoverflow.com/questions/6547429/regex-syntax-diagram">this question</a> so I was wondering if there was something similar for JavaScript out there.</p></li>
  <li><p>It doesn't have to be a plug-in, though something for Notepad++ would be ideal. I checked via Notepad++'s Plug-in manager but the two RegEx tools I could see there weren't very good.</p></li>
  <li><p>A webpage which accepted an expression and produced a diagram would work just as well and would save me having to use JSFiddle so much.</p></li>
  </ul>
  
  <p>Does anyone know if such a tool exists? Or if there is some trick that I'm missing that can make human parsing of RegEx easier?</p>