Explain the difference between “ByVal” and “ByRef” in VBScript functions.

Explanation of ByVal and ByRef in VBScript functions

When it comes to VBScript functions, understanding the difference between ByVal and ByRef is crucial for effective programming. Both ByVal and ByRef are used as parameters in a function, but they operate differently.

ByVal:

ByVal stands for "By Value." When a parameter is passed by value using ByVal, a copy of the actual value is passed to the function. This means that any changes made to the parameter inside the function do not affect the original value outside of the function.

ByRef:

ByRef stands for "By Reference." When a parameter is passed by reference using ByRef, the actual memory address of the variable is passed to the function. This allows changes made to the parameter inside the function to reflect on the original value outside of the function.

It is important to carefully consider whether to use ByVal or ByRef based on the specific requirements of the function and whether you want changes to be reflected outside of the function.

By understanding the distinction between ByVal and ByRef, you can effectively control how parameters are passed and manipulated within your VBScript functions.