First, there is an INPUT tag that causes a button named "BtnHello" to
be created.
Hello, world
How does this sample work? The HTML for the page has two salient
features.
<INPUT TYPE=BUTTON VALUE="Click me" NAME="BtnHello">
Second, there is a script tag that contains an event handler for
BtnHello's "OnClick" event. As in Visual Basic, event handlers are
named using the pattern ObjectName_EventName, which in
this case means BtnHello_OnClick. When the button is clicked, the
procedure with that name is run. In response to the button being
clicked the event handler puts up a message box by using VBScript's
MsgBox runtime function.
<SCRIPT LANGUAGE="VBScript">
Sub BtnHello_OnClick
MsgBox "Hello, world!", 0, "My first active document"
End Sub
</SCRIPT>