When you get an infinite loop in jsfiddle in Chrome, your only choice (that I know of) is to close the tab. Of course, this means you lose all your work in the current wind
In case others are stuck after reading the other answers, here's what worked for me (Chrome, Mac). For me the JSFiddle tab was 'stuck' but the rest of Chrome responsive. I had the JavaScript Console open on the Resources pane, but it was unresponsive too. Reloading the page in this state didn't help because JSFiddle would give me the script before I got anything at all.
In the end this worked for me; maybe it will help you too...
Chrome > Preferences > Privacy
and disable JavaScript.View > Developer > View source
div
called 'panel_js'
.I had file stuck in a loop and would freeze up the dashboard on JSFiddle as well.