JADE.. never mind how messy it looks when the no. of lines crosses 100. but if u know what space(indentation) does to a tag, JADE is simply a piece of cake.

I was 'once' a Backbone developer. ;) yes, seriously, both frameworks and people are growing up. 'REACT' -- is what I'm working currently, and needless to say, simlply Superb! One would understand my context, only when he/she has developed a complete Single Page App, all with Backbone, and tried to implement the same with React. I now no more have the mood to work back in Backbone. lol.

forEach: it's just loops through the items in an object/array, with single-step increments, and does nothing apart from that. map: It loops through the items in an obj/array, alongside, it allows the user to work on the individual indexed items and RETURNS a new array which has the expected output. i.e it takes the input array to project a new array with the expected output.

C9 (Cloud9). As simple as that. One of the best editor I've ever seen, with full of cloud-management.