The use of `document.write` for this entry instead of the usual console threw me off at first.
FYI, if you're embedding a JSFiddle you could also just drop this in the HTML section then use console.log:
<script>console.log = function(str) { document.write(str, "<br/>") }</script>Hence document.write is used.
Though HTML could be used but that would just increase one more tab to show useless HTML. ;)