Comparing speed of jQuery 2.1.4 selector and vanilla JS querySelector

There are two way of encoding html elements. One is the create an html element and let the browser handle it. The second looks at every character passed in and then runs a regex match on it and replaces the chars with &#CHAR_CODE;.

Testing some things

A comparison of the performance of the spread operator, [ ...array ], vs. Array.map(i => ...) and

push vs unshift