Output: The results of executing the CSS, HTML, and JavaScript entered into the sections of the page. Figure A shows jsFiddle loaded in Internet Explorer 9 with empty code panes.

All you have to do is visit Paste HTML, enter some code, publish it, and look at what you made. Paste HTML supports HTML, CSS, and JavaScript. You can even use Markdown if you want.

While HTML, CSS and JavaScript are powerful tools, they tend to run out of steam with development of advanced web applications that store data on the client side and manage complex state transitions.