title: Looking for a tool can run javascript in my computer
body: <p>Sometimes I have to test some javascript code, that I use <a href="http://jsbin.com" rel="nofollow">jsbin.com</a>, but it's not always convenient.</p>
  
  <p>I hope there is a GUI tool can let me run javascript in my computer. I paste some javascript code into it and click 'RUN', that it will show me result.</p>
  
  <p>Is there such a tool?</p>
  
  <hr>
  
  <p><strong>UPDATE</strong></p>
  
  <p>If I use browser, I need to create a html file first, that's not convenient. I think what I want is a offline version of jsbin.com.</p>