VBScript Tutorials - Herong's Tutorial Notes

Version 4.01

Dr. Herong Yang

Copyright © 1999 - 2006 by Dr. Herong Yang. All rights reserved.

Table of Contents

About This Book

Quick Introduction of Visual Basic

• What Is Visual Basic?
• Using Visual Basic within Internet Explorer
• Using Visual Basic within Microsoft Access

Data Types and Literals

• Data Types
• Data Literals
• More on String Literals

Numeric Operations

• Long Integer Operations
• Double Floating Number Operations
• Numeric Operations on Other Data Types

Comparison and Logic Operations

• Numeric Comparisons
• Logical Operations

String Operations

• Concatenation
• String Comparison Operations

Variables - Declaration and Assignment

• Variable Declaration
• Assigning Values to Variables
• Variable Default Values

Expressions

• What Is an Expression?
• Precedences of Operations
• Expression Example

Statements and Grammar

• What Is a Statement
• Types of Statements

Array Declaration and Built-in Functions

• What Is an Array?
• Array Variable Declaration
• Assigning Values to Array Elements
• Retrieving Values from Array Elements
• Fixed-Size Array Example
• Dynamic-Size Array Example
• "Array" Function and "For Each" Example
• "Erase" Statements

Conditional Statements

• "If" Statements
• "If" Statement Example
• "Select Case" Statements
• "Select Case" Statement Example

Loop Statements

• "For ... Next" Statements
• "For ... Next" Statement Example
• "While" Statements
• "While" Statement Example
• "Do ... Loop" Statements

Procedures - Functions and Subroutines

• What Is a Procedure?
• Defining and Invoking Function Procedures
• Function Procedure Example
• Defining and Invoking Sub Procedures
• Sub Procedure Example
• Rules of Passing Arguments
• Example - Passing Arguments by Reference
• Example - Passing Arguments by Value
• Passing Array as Arguments
• Variable Scope in Procedures
• Example - Variable Scopes

Built-in Functions

• Math Functions
• Conversion Functions
• String Functions
• Date and Time Functions
• Array Functions
• Misc. Functions

Variable Inspection and Numeric Conversion

• Variable Inspection
• Variable Inspection Example
• Parsing Long Integers

References

Key Words: Visual Basic, VB Script, Data Type, Variable, Variant, Array, String, Operation, Expression, If Else, Loop, While, For Each, Procedure, Function, Null, and Conversion.