Comparing speed of getting element by id with Umbrella vs Vanilla JS

modified version of `map-filter vs reduce` that switches the order of operations

Comparing speed of getting element by id with jQuery vs Vanilla JS

Array with keys and Array with values into Object.

x.push(value) vs x = [...x, value];

Compares performance on the same task using Lodash vs two styles of Ramda vs two styles of "native" Javascript. In all cases the task is pulling "counter" property from each item in an array, filtering out odd items, squaring them, then returning those squared values that have less than two digits.

Testing some things

Testing some things

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