Differences between byval and byref-Summary _ javascript skills

The differences between byval and byref are summarized as follows:
Byval is used to pass a value. The real parameter and the form parameter have different memory units, so they do not interfere with each other!
Byref transfer address. The real parameter and the form parameter occupy the same memory unit. If the form parameter is changed, the real parameter is changed !!!!!!
Easy to understand:
Byval is gone forever
Byref may be updated!
In JavaScript:
Boolean, Number, and String parameters are passed by value ==> equivalent to ByVal in VBS;
Object parameters (including JS objects, Array objects, and Function objects) are passed by reference ==> equivalent to ByRef in VBS.

The Code is as follows:

Function value passing test