A Microsoft VBScript (Visual Basic Script) Primer: VBScript Tutorial #1
In our current context, VBScript has emerged as a crucial subject, particularly for newbies looking to understand scripting languages or automation instruments like QTP/UFT.
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=> Explore the QTP Learning Series of Tutorials here
=> SCROLL BELOW for a comprehensive list of 15+ In-Depth VBScript Tutorials for Beginners
We will be presenting an array of VB Scripting tutorials to aid developers and testers in swiftly mastering VBScript in an easy-to-digest format.
In following tutorials, we will discuss other critical aspects of VBScript such as Variables, Constants, Operators, Arrays, Functions, Procedures, Excel Objects, Connection Objects, etc., to simplify the understanding of VBScript Programming Language.
==> Master VBScript with these 15 Tutorials <==
Tutorial #1: VBScript Introduction
Tutorial #2: Declaring and Using Variables in VBScript
Tutorial #3: Operators, Operator Hierarchies, and Constants in VBScript
Tutorial #4: Implementing Conditional Statements in VBScript
Tutorial #5: VBScript Loops along with Part 2 here
Tutorial #6: Working with Procedures and Functions in VBScript
Tutorial #7: VBScript Arrays
Tutorial #8: Date Functions in VBScript
Tutorial #9: Handling Strings and Cookies in VBScript
Tutorial #10: Event Handling in VBScript
Tutorial #11: Managing Excel Objects in VBScript
Tutorial #12: Working with Connection Objects in VBScript
Tutorial #13: File Management in VBScript
Tutorial #14: Error Management in VBScript
Tutorial #15: VBScript Interview Questions
Initially, we have chosen to start with ‘Introduction to VBScript’.
In this tutorial, we will delve into the basics of VBScript, touching on its features, supported data types, coding methods, and the process of managing comments and formatting in scripts.
Topics Covered:
What is VBScript?
VBScript is a scripting language, as the name implies. It’s a lightweight, case-insensitive programming language created by Microsoft. It can be viewed as a subset of ‘Visual Basic’ or a simplified version of Microsoft’s programming language, Visual Basic.
Many of us have experimented with Visual Basic during our academic journey. Visual Basic is an event-driven programming language along with an Integrated Development Environment developed by Microsoft.
VBScript is deployed in QTP for coding and executing automated test scripts. It is not a challenging language to learn and with basic programming skills and a zest for coding, anyone can easily learn it. Having acquaintance with Visual Basic is a plus point.
Automation testers who aim to construct, upkeep, and run tests in QTP must possess basic VBScript programming skills.
Core Ideas of VB Scripting
Let’s now delve into some fundamental VBScript topics to facilitate a clear understanding and knowledge of VBScript.
Data Types
1) There is a single data type: Variant. It can store different types of data depending on the context it is used in.
2) If employed in a numeric context, it acts as a number, and if used in a string expression, it behaves as a string.
3) To consider a number as a string, it can be enclosed within double quotes.
4) There are various subtypes of the Variant data type. You can explicitly specify these subtypes to define the data more clearly. The following screenshot illustrates all the usable data subtypes:
(click on the image to enlarge)
5) Conversion functions can be utilized to transform one subtype of data into another.
6) Since Variant is the solitary data type, all function return values are variants.
You can try some VBScript examples on your own.
Variables
1) A variable is a memory space in the computer that can store certain data. The content of this space can vary over time. The specific location of the data is irrelevant, but it can be accessed or modified by referencing the variable’s name.
For instance, if a statement needs to be executed multiple times, a variable can be used to store that count. Suppose we utilize the variable X to store, change, and use the memory space where we want to maintain the count.
2) All variables are of the Variant data