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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Produce a deep copy of a Javascript object where nested objects are not simply references to the originals.

Is there a performance benefit to replacing == with >?