VBScript Tutorials - Herong's Tutorial Examples - v6.02, by Herong Yang
"If" Statement Examples
This section provides a tutorial example on how to use different types of 'If' statements to control code executions.
To help you understand how "If" statements work, I wrote the following the example, condition_if.html:
<html> <body> <!-- condition_if.html - Copyright (c) 1998 HerongYang.com. All Rights Reserved. --> <pre> <script language="vbscript"> ' Single-statement "If" bIsNewYear = True document.writeln("") If bIsNewYear Then document.writeln("Happy New Year!") ' Multi-statement "If" bIsLogOn = True document.writeln("") If bIsLogOn Then document.writeln("Open the log file.") document.writeln("Write the log message.") document.writeln("Close the log file.") End If ' "If ... Else" statement bIsAdmin = False document.writeln("") If bIsAdmin Then document.writeln("Display the delete button.") document.writeln("Display the edit button.") Else document.writeln("Display the view button.") End If ' "If ... ElseIf" statement iDay = 4 If iDay = 0 Then sOpenHours = "closed" ElseIf iDay >= 1 And iDay <=5 Then sOpenHours = "open from 9:00am to 9:00pm" ElseIf iDay = 6 Then sOpenHours = "open from 9:00am to 5:00pm" Else sOpenHours = "undefined" End If document.writeln("") document.writeln("The library is " & sOpenHours) </script> </pre> </body> </html>
Here is the output:
Happy New Year! Open the log file. Write the log message. Close the log file. Display the view button. The library is open from 9:00am to 9:00pm
The output matches my expectation perfectly!
Table of Contents
Introduction of VBScript - Visual Basic Scripting Edition
Variant Data Type, Subtypes, and Literals
Numeric Comparison Operations and Logical Operations
String Operations - Concatenation and Comparison
Variable Declaration and Assignment Statement
Expression and Order of Operation Precedence
Statement Syntax and Statement Types
Array Data Type and Related Statements
Array References and Array Assignment Statements
►Conditional Statements - "If ... Then" and "Select Case"
"Select Case" Statement Examples
Loop Statements - "For", "While", and "Do"
"Function" and "Sub" Procedures
Inspecting Variables Received in Procedures
Error Handling Flag and the "Err" Object
Regular Expression Pattern Match and Replacement
scrrun.dll - Scripting Runtime DLL Library
IE Web Browser Supporting VBScript