My philosophy on this is to always match the style of the project you're working on, and you'll see me doing this in some planned DailyJS eBooks for 2013.
51% of respondents don't write tests -- down from 58% last year.
Jasmine is the most popular testing library, at 45%, with Mocha close behind at 41%. QUnit is also very popular with 31%. For reference, these were last year's test library results:
Jasmine (44%) has edged out QUnit (41%)! Vows is also doing well with 13%. Express/Mocha scored 11%, slightly ahead of Nodeunit at 8%.
Vows is now down to 7%, and Mocha has risen by a staggering 30%. It's natural for some libraries to rank higher if they work in both browsers and Node.
JSLint is down to 56% from 67%, but it's still the most popular static analysis tool. JSHint is close behind at 55%.
uglify is the most popular minimiser, which isn't surprising given that it's bundled with many other tools.
WebKit Inspector is the most popular debugging tool, at 79%. 500 people said they debug using
node --debug, which is interesting because this is an area that I still feel needs work when developing with Node.
80% of respondents benchmark with client-side tools (1372 people). That's probably not surprising, but given the performance-obsessed nature of certain prominent Node developers I'd have expected to see more people ticking "Benchmark scripts using a benchmarking library".
44% of readers also write PHP, down slightly from 46% last year. C, Java, Python, and Ruby all rank around 20%, with Java edging the others out. Are there any Android developers out there?
RequireJS is the most popular module loading system -- 1237 people use it. Given the sheer amount of documentation it has and the high quality site, it's not surprising that it's popular. Others that I didn't mention included YUI, LABjs, and ExtJS.
Google Ajax Libraries is the most popular CDN, and it was interesting to see CloudFlare at 11%.
At 91%, I wondered if GitHub might be at its peak. It was at 81% last year. I know there are many fellow freelancers who appreciate Bitbucket's free private hosting, and at 20% I suspect there are people out there using both for the same reasons as me. Google Code is at 3%, so Google has got its work cut out if it wants to compete for open source projects.
Apart from a few surprises, 2012 has seen similar trends to last year. The new questions from Todd Bashor, Tyler Larson, and Adam Alexander were excellent, and I'm looking forward to seeing if semicolon use changes over time.
Thanks to everyone who took part in the survey!