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Local Variables and subroutines

Good software design methodologies require that the solution be modular with well documented interfaces and data hiding where possible. We utilize subroutines to help solve pieces of the overall problem. The following examples demonstrates how to define 2 subroutines in VBscript and define local variables which are hidden from outside subroutines.

<html>
<head>
<Title> subroutines</title>
</head>
<body>
<% sub Procedure_1()
strDifferent="Hi I'am strDifferent in Procedure_1"%>
<%=strDifferent%>
<%End sub%>

<% sub Procedure_2()
strDifferent="Hi I'am strDifferent in Procedure_2"%>
<%=strdifferent%>
<%End sub%>

<P> Calling Procedure 1 ..<I><%Procedure_1()%> </i></P>
<P> Calling Procedure 2 ..<I><%Procedure_2()%> </i></P>
<P> Calling Procedure 1 ..<I><%Procedure_1()%> </i></P>
</body>
</html>

You see the result:

Calling Procedure 1 ..Hi I'am strDifferent in Procedure_1

Calling Procedure 2 ..Hi I'am strDifferent in Procedure_2

Calling Procedure 1 ..Hi I'am strDifferent in Procedure_1

How it works:
Each subroutines Procedure_1 and procedure_2 define their own copies of strDifferent and assign different values to thereby demonstrating how to create a local variable and the scope of that variable.


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