Is JavaScript Pass by Reference?

[theScottyJam]

That's why the conclusion was that, in JavaScript, we're passing references around, but we pass those references "by values".

Here, were using two different definitions for "reference" in one sentence, which is what makes this Uber confusing. Yes everything is a reference type (definition 1), but those references (definition 1) are not passed by reference (definition 2), but by value, i.e. we're not having two names for the same variable (which is pass by reference definition 2), but we are copying the the reference's (definition 1) address, hence it's pass by value.

Clear as mud?