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Asp Variables in ASP

Asp Variables in ASP

Sure! Here's a clear overview of Variables in Classic ASP (using VBScript):


ASP Variables

In Classic ASP, variables are used to store data values. VBScript (the default ASP scripting language) is loosely typed, meaning you don’t declare the variable type explicitly.


Declaring Variables

Use the Dim statement to declare variables:

<%Dim name, age, pricename = "Alice"age = 30price = 19.99%>

Variable Types

VBScript variables are variants — they can hold any data type:

  • String: "Hello"

  • Integer / Double: 100, 3.14

  • Boolean: True or False

  • Date: #2025-05-30#

  • Object: (e.g., database connection objects)

  • Array: collections of values


Assigning Values

<%Dim xx = 10x = x + 5x = "Now a string"   ' Can change type anytime%>

Using Variables

You can output variable values like this:

<%Dim usernameusername = "Bob"Response.Write "Welcome, " & username%>

Or shorthand:

Welcome, <%= username %>

Constants

Constants hold fixed values and are declared with Const:

<%Const Pi = 3.14159Response.Write "Pi = " & Pi%>

Scope of Variables

  • Variables declared with Dim inside <% %> have page-level scope.

  • To share variables across pages for the same user, use Session.

  • To share variables globally for all users, use Application.

  • Variables inside functions or subroutines are local by default.


Example: Using Variables

<%Dim firstName, lastNamefirstName = "Jane"lastName = "Doe"Response.Write "Hello, " & firstName & " " & lastName%>

If you want help with arrays, objects, or best practices for variable naming and usage in ASP, just ask!

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