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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
Yes, the first point will fix all 3 of those lines :)
I think your code is the non-standard one - [click here to try it out on jsconsole and see what happens](http://www.jsconsole.com/?for%20(var%20i%20in%20%5B%22a%22%2C%22b%22%2C%22c%22%5D%29%20console.log(i%29)