// Nice ES6 features: let a = ['a', 'b', 'c']; for (let [k,v] of a.entries()) { console.log(`k=${k}, v=${v}`); } https://babeljs.io/repl/#?experimental=true&playground=true&evaluate=true&loose=false&spec=false&code=let%20arr%20%3D%20%5B'a'%2C%20'b'%2C%20'c'%5D%3B%0Afor%20(let%20%5Bk%2Cv%5D%20of%20arr.entries())%20%7B%0A%20%20%20%20console.log(%60key%20%3D%20%24%7Bk%7D%2C%20value%20%3D%20%24%7Bv%7D%60)%3B%0A%7D%0A …
Replying to @rauschma
@rauschma @rwaldron All thanks to http://ace.c9.io/
2:47 PM - 22 Feb 2015
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he/him 