Yep, JsFiddle is brilliant.<p>There are a few others too.<p><a href="http://jsbin.com" rel="nofollow">http://jsbin.com</a> - Not as many features as JsFiddle and the preview is on a separate page. The HTML/CSS/JS isn't kept completely apart either.<p><a href="http://cssdesk.com" rel="nofollow">http://cssdesk.com</a> - Primarily for CSS/HTML. Preview is automatically updated.<p><a href="http://mootools.net/shell/" rel="nofollow">http://mootools.net/shell/</a> - Similar but more Mootools-centric; fewer features etc than JsFiddle.
It really is great for fiddling with html,css,and javascript all on the same screen without having to deal with a complicated development environment or separate files.<p>It would be a nice platform for teaching basics, or even introducing something new.
How amazingly cool is this!<p><a href="http://jsfiddle.net/michaelsbradleyjr/sZUtU/" rel="nofollow">http://jsfiddle.net/michaelsbradleyjr/sZUtU/</a><p>I had not really tinkered with flapjax on the client-side until tonight, but jsfiddle sparked my instincts to really fiddle with something I had been delaying fiddling (or "tinkering") with.<p>So, thank you, jsfiddle! I think you're going to make for a powerful creativity enhancer. :-D
Would be nice to have a preloaded example - i had to look at the screen for half a minute just to sort out all the elements that don't make immediate sense if there's not context that you're accustomed to..
Very nice. There was a different tool I used for prototyping html, but it wasn't as nice and intuitive as this.
For now it's bookmarked so I can look at it in more depth later.
I think Panic should update Coda to allow a similar 4-square split of the window. Currently you can split the window as many times as you want, but they all have to be the same orientation (ie. You could have 4 rows <i>or</i> 4 columns.<p>But yes jsfiddle is great. Note that you can load more resources into it, like KnockoutJS, and use them to. It also does automatic version control (well, the version number increments when you press save, but the old URL still works). I first discovered it in the Stackoverflow JS chartroom, where everyone was using it. I showed a lecturer at university, and now lots of people there are 'fiddling.'
I recently wrote a little throwaway blogpost that used the embed ability of jsFiddle (<a href="http://breakfastdinnertea.co.uk/blog/keep-those-rows-line-little-jquery-snippet/" rel="nofollow">http://breakfastdinnertea.co.uk/blog/keep-those-rows-line-li...</a> - excuse the pig ugly design et al). I found it an absolute joy to work with. It also provides nice fork abilities for any ensuing discussion / counter arguments on Twitter or wherever.
jsfiddle is really good. I like the auto indenting feature it is doing pretty well. One small feature request :) it would be better if it shows error some box or some thing. So it would be easy to quickly rectify instead of going through the syntax check somewhere else.