VBScript Tutorials - Herong's Tutorial Examples - Version 5.20, by Dr. Herong Yang

Expression and Order of Operation Precedence

This chapter provides tutorial examples and notes about expressions in VBScript. Topics include writing a simple expression or a complex expression, order of operation precedence, examples of expressions.

What Is an Expression?

Precedences of Operations

Examples of Expressions

Conclusions:

  • A simple expression can be a data literal, a variable or function call.
  • A complex expression can be an operation or a group of operations.
  • Operations in a complex expression must be evaluated according to the order of operation precedence.
  • An expression will always result a single value.

Table of Contents

 About This Book

 Introduction of VBScript - Visual Basic Scripting Edition

 Variant Data Type, Subtypes, and Literals

 Arithmetic Operations

 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"

 Loop Statements - "For", "While", and "Do"

 "Function" and "Sub" Procedures

 Built-in Functions

 Inspecting Variables Received in Procedures

 Error Handling Flag and the "Err" Object

 Regular Expression Pattern Match and Replacement

 scrrun.dll - Scripting Runtime DLL Library

 Creating Your Own Classes

 IE Web Browser Supporting VBScript

 IIS ASP Server Supporting VBScript

 WSH (Windows Script Host)

 References

 Printable Copy - PDF Version

Expression and Order of Operation Precedence - Updated in 2015, by Dr. Herong Yang