Add: ECMAScript 6’s new array methods
Add: ECMAScript 6’s new array methods

tricknotes/jser.info,syoichi/jser.info,watilde/jser.info,h13i32maru/jser.info,h13i32maru/jser.info,tricknotes/jser.info,watilde/jser.info,syoichi/jser.info