What is vbscript -vbscript introduction

 

WHAT IS VBSCRIPT ?

what is vbscript

            

               Welcome to the VBScripting environment. In that observe about sentence structure of VBScript, Enabling VBScript ,position of VBScript ,factors of VBScript ,constants,decisions,operator,loops,event,cookies,number,string,arrays,date,procedures,dialog boxes,object oriented,reg expressions,error handling,MISC articulations. 

                    VBScript, or its complete name, Microsoft Visual Basic Scripting Edition Language, is an improved adaptation of Visual Basic and Visual Basic for the Application Family of Programming Languages. It is likewise considered firmly identified with the Basic Programming Language. 

                VBScript is a scripting language. Or on the other hand more accurately a "scripting domain" that can improve and initiate HTML pages contrasted with standard web shows. Specifically, VBScript as a customer side scripting language for Microsoft Internet Explorer (adaptation 3.0 and later) by Microsoft, or as a server-side scripting language with Microsoft Internet Information Server (form 3.0 and later). Made to use in An essential bit of leeway to utilizing a server-side methodology is that VBScript is prepared by the server before it is transmitted by the customer. In this way, the customer gets just a single HTML page and we don't need to stress ourselves whether the program can decipher VBScript. On the other hand, utilizing a customer side methodology, you deliberately move the outstanding burden to the program to lessen the server's remaining task at hand. Lamentably, more established or non-Microsoft programs will most likely be unable to decipher and show the transmitted document accurately. Furthermore, the source code is presented to the program client. On the brilliant side, a customer side program can deliver an increasingly responsive application, as client info can be handled on the customer machine, and not sent back to the server for preparing. 

                    The genuine centrality of VBScript is that it is the default language of Active Server Pages (ASP). 

                  ASP is an energizing innovation from Microsoft that is essential to engineers. ASP broadens standard HTML by including worked in articles and server-side scripting and permitting access to databases and other server-side ActiveX segments. This implies now it is simpler than at any other time to make your site pages dynamic and alluring as you wish. 

                        VBScript can be a significant programming language. 

                    VBScript adaptation 5.0 was discharged in 1999. Unquestionably, the most significant new component of variant 5.0 is the capacity to utilize class explanations to make its own class object. Other new highlights of intrigue incorporate the TimEx work, with explanation, and RegExp and match objects utilizing ordinary articulations.

what is overvire of vbscript

 

VBScript - Overview

Overview Of VBScripting

               VBScript represents Visual Basic Scripting that forms a subset of Visual Basic for Applications (VBA). 

              VBA is a result of Microsoft which is incorporated NOT just in other Microsoft items, for example, MS Project and MS Office yet in addition in Third Party instruments, for example, AUTO CAD. 

    Features :

                    1.VBScript is a lightweight scripting language, which has an exceptionally quick mediator. 

                    2.Unlike C++ or Java, VBScript is an item based scripting language and NOT an Object-Oriented Programming language. 

                    3.VBScript, generally, is case obtuse. It has a basic language structure, simple to learn and to actualize. 

                    4.It utilization Component Object Model (COM) so as to get to the components of the earth where it is executing. 

                    5.Successful execution of VBScript can happen just on the off chance that it is executed in Host Environment, for example, Internet Explorer (IE), Internet Information Services (IIS) and Windows Scripting Host (WSH) 

    VBscript – Version History and Uses : 

               VBScript was presented by Microsoft path in 1996 and the principal variant was 1.0. The Current Stable rendition of VBScript is 5.8, which is accessible as a component of IE8 or Windows 7. 

               VBScript is utilized as a scripting language in one of the famous Automation testing devices – Quick Test Professional contracted as QTP 

               The VBScript use territories are galore and not limited to the beneath list. 

               Windows Scripting Host, which is utilized for the most part by Windows System overseers for robotizing the Windows Desktop. 

               Dynamic Server Pages (ASP), a server side scripting condition for making dynamic site pages which utilizes VBScript or JavaScript. 

               VBScript is utilized for Client side scripting in Microsoft Internet Explorer. 

               Microsoft Outlook Forms as a rule runs on VBScript; in any case, the application level programming depends on VBA (Outlook 2000 onwards). 

Disadvantage :

               VBscript is utilized uniquely by IE Browsers. Different programs, for example, Chrome, Firefox DONOT Support VBScript. Henceforth, JavaScript is favored over VBScript. 

               VBScript has a Limited order line support. 

               Since there is no improvement condition accessible as a matter of course, investigating is troublesome. 

Where VBScript is Today ? 

               The present rendition of VBScript is 5.8, and with the ongoing advancement of .NET system, Microsoft has chosen to offer future help of VBScript inside ASP.NET for web improvement.

               Henceforth, there won't be any increasingly new forms of VBScript motor yet the whole imperfection fixes and security issues are being tended to by the Microsoft supporting Engineering Team. 

               Nonetheless, VBScript motor would be dispatched as a feature of all Microsoft Windows and IIS of course.

what is VBScript - Syntax

 

VBScript - Syntax

Syntax Of VBScript

    Your First VBScript is

        Let us write a VBScript to print out "Hello script kiddie".

<html>     <body>         <script language="vbscript" type="text/vbscript">                document.write("Hello script kiddie!")         </script>     </body> </html>

                In the above example, we called a function document.write, which writes a string into the HTML document. This function can be used to write text, HTML or both. So, above code will display following result:

Hello script kiddie!

• Whitespace and Line Breaks :

                 VBScript ignores spaces, tabs and newlines that appear within VBScript programs.

                 Because one can use spaces, tabs and newlines freely within the program so you are free to format and indent your programs in a neat and consistent way that makes the code easy to read and understand.

• Formatting :

                VBScript is based on Microsoft's Visual Basic. Unlike JavaScript, no statement terminators such as semicolon is used to terminate a particular statement.

• Single Line Syntax :

                Colons are used when two or more lines of VBScript ought to be written in a single line. Hence, in VBScript, Colons act as a line separator.

<script language="vbscript" type="text/vbscript">       var1 = 10 : var2 = 20 </script>

• Multiple Line Syntax :

                When a statement in VBScript is lengthy and if user wishes to break it into multiple lines, then the user has to use underscore "_".

                 This improves the readability of the code. The following example illustrates how to work with multiple lines.

<script language="vbscript" type="text/vbscript">   var1 = 10   var2 = 20   Sum = var1 + var2    document.write("The Sum of two numbers"&_   "var1 and var2 is " & Sum) </script>

• Reserved Words :

                The following list shows the reserved words in VBscripting. These reserved words SHOULD NOT be used as a constant or variable or any other identifier names.

Loop	LSet	Me	Mod	ParamArray	Or	Next	Preserve	ReDim
Not	Nothing	Null	On	Currency	New	Optional	Private	Rem
Resume	RSet	Select	Set	Shared	Single	Static	Stop	Then
To	True	Type	And	Boolean	As	ByRef	Byte	Call
Case	Class	Const	Option	Debug	Dim	Do	Double	Else
End	EndIf	Enum	Eqv	Event	Exit	False	Empty	ElseIf
False	For	Function	Get	SendKeys	Imp	If	Implements	Integer
Is	Let	Like	Long	TypeOf	Until	Variant	Wend	With
GoTo	Randomize	Explicit	Option	ExecuteGlobal	Erase	Msgbox	Execute	Xor
Public	RaiseEvent	Sub	ByVal	Each	False	In	While	Eval

        

• Case Sensitivity :

                VBScript is a case-insensitive language. This means that language keywords, variables, function names and any other identifiers need NOT be typed with a consistent capitalization of letters.

                So identifiers int_counter, INT_Counter and INT_COUNTER have the same meaning within VBScript.

• Comments in VBScript :

                Comments are used to document the program logic and the user information with which other programmers can seamlessly work on the same code in future.

                It can include information such as developed by, modified by and it can also include incorporated logic. Comments are ignored by the interpreter while execution.

                Comments in VBScript are denoted by two methods.

1. Any statement that starts with a Single Quote (‘) is treated as comment. Following is the example:

<script language="vbscript" type="text/vbscript"> <!—   ' This Script is invoked after successful login   ' Written by : Script Kiddie   ' Return Value : True / False //- > </script>