Tests adding an element to a map vs an immutable js map.

FizzBuzz

create an array with all values "" same length than the original array

Cópia de obj

Compare the new ES6 spread operator with the traditional concat() method

lodash map vs Object.keys map

String split vs Regex

String split vs Regex

Testing some things

push, push.apply, concat, array access

push apply versus concat

Testing query speed of a single element, in a random dom tree