Computer Programming Concepts and Visual Basic David I. Schneider

FIGURE 13-7
14. Feel free to type into the text box and click on the command button. Nothing
will happen since no code has yet been written for them.
■ ACTIVATING A WEB PAGE WITH VBSCRIPT
The VBScript programming language is an offshoot of Visual Basic. It has most of the familiar
features, such as If blocks, Do loops, Select Case blocks, procedures, and arrays.
However, VBScript has some differences from Visual Basic. For instance, all variables are of
type Variant and are declared with a statement of the form Dim variableName. VBScript supports
the functions FormatNumber, FormatCurrency, FormatPercent, and FormatDateTime,
but not the plain Format function. Some additional differences between Visual Basic and
VBScript are listed in Comments 5 and 6.
Code is written into a SCRIPT element with begin tag
and end tag . Let's continue the walkthrough above by adding some code to the
HTML document created in the walkthrough. (If you have already closed the HTML document,
you can bring it back into the ActiveX Control Pad with Alt/File/Open.)
15. Type the following code into the body element of the document, just below the
OBJECT elements, and then Save the document.
Sub cmdShow_Click()
Dim nom
nom = txtFirstName.text
MsgBox “Greetings ” & nom
End Sub
Web Page Programming With VBScript 401
16. Return to Internet Explorer and look at the revised Web page. (If you have not
changed the Address since the walkthrough, just click on the Refresh icon to
load the revised HTML page. Otherwise type in its filespec and press the Enter
key.)
17. Type your name, say David, into the text box and click on the command button.
A message box will pop up with the message “Greetings David”.