Comment Comment by anon3433 Array.prototype.map()[1] has been in js since ES5. Likewise with filter[2] and reduce[3]...[1] http://es5.github.io/#x15.4.4.19[2] http://es5.github.io/#x15.4.4.20[3] http://es5.github.io/#x15.4.4.21 parent anon3433 9 years ago
[1] http://es5.github.io/#x15.4.4.19
[2] http://es5.github.io/#x15.4.4.20
[3] http://es5.github.io/#x15.4.4.21