Array flat es5 syntax (reduce concat vs apply concat)

Array fill method vs for loop performance validation

Testing finding an object array via findIndex or by using a for loop

Testing finding an object array via findIndex or by using a for loop

Comparing performance of: jquery 1.12.4 vs jquery 2.2.4 vs jquery 3.5.1

Comparing performance of: jquery 1.12.4 vs jquery 2.2.4 vs jquery 3.5.1

Compares slice, substr and substring to each other when there are two args