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

Comparing speed of jQuery 3.3.1 selector and vanilla JS querySelectorAll

Testing some things

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

Comparing speed of getting element by id with jQuery vs Vanilla JS ($ fix)

Various cases to iterate over given object

This demonstrates the difference in performance between 2-tier architectures, which simply return database objects through controllers from the repositories vs 3-tier architectures which run some sort of service layer mapping to obfuscate unnecessary db information from both the controller layer and, subsequently, the front-end. Such mapping logic will ideally use Object.assign, the spread operator, or perhaps an explicit constructor mapping.

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