[The Tang Clan Chronicles] They Explain What This Mushroom Are?

Related to is there a "null coalescing" That is, javascript "short-circuits" the evaluation of boolean operators and will return the value associated with either the first non-false variable value or whatever the last variable contains. Novice javascript developers need to know that the "not not" operator is using implicitly the original loose comparison method instead of the exact === or !== operators and also the hidden cast.

Jan 25, 2009javascript now supports the nullish coalescing operator (??). It returns its right-hand-side operand when its left-hand-side operand is null or undefined, and otherwise returns its left-hand-side. Dec 11, 2009what is the difference between the !== operator and the != operator in javascript?

Does it behave similarly to the === operator where it compares both value and type?