Cookies in Classic ASP are used to store small pieces of data on the client’s browser. You can set, read, and delete cookies using the Response.Cookies and Request.Cookies objects.

How to Work with Cookies in Classic ASP

1. Set a Cookie

<%' Set a cookie named "UserName"Response.Cookies("UserName") = "JohnDoe"' Set cookie expiration to 7 days from nowResponse.Cookies("UserName").Expires = DateAdd("d", 7, Now())%>

2. Read a Cookie

<%Dim userNameIf Request.Cookies("UserName") <> "" Then    userName = Request.Cookies("UserName")    Response.Write "Welcome back, " & Server.HTMLEncode(userName)Else    Response.Write "Welcome, new visitor!"End If%>

3. Delete a Cookie

<%' To delete a cookie, set its expiration date to a past dateResponse.Cookies("UserName").Expires = DateAdd("d", -1, Now())%>

4. Set Subkeys in a Cookie

You can store multiple values inside one cookie by using subkeys.

<%Response.Cookies("UserInfo")("FirstName") = "John"Response.Cookies("UserInfo")("LastName") = "Doe"Response.Cookies("UserInfo").Expires = DateAdd("d", 7, Now())%>

Read subkeys:

<%Dim firstName, lastNamefirstName = Request.Cookies("UserInfo")("FirstName")lastName = Request.Cookies("UserInfo")("LastName")Response.Write "Hello, " & Server.HTMLEncode(firstName) & " " & Server.HTMLEncode(lastName)%>

Important Notes

• Cookies are stored on the client’s browser and sent with every HTTP request to your domain.

• Cookies have size limits (~4KB).

• Never store sensitive info (like passwords) in cookies.

• Use Server.HTMLEncode when outputting cookie values for security.

• Cookies can be set to a specific path or domain (optional).

Would you like examples on secure cookies, cookie path/domain, or using cookies with forms?