The WSH is a bit application. It is composed of three major components. These components include:. Scripting engines provide WSH scripts with an interpreter that translates script statements into executable code. The WSH provides two different execution hosts. These hosts provide the ability to run scripts from either the Windows desktop or the Windows command prompt.
Finally, the core object model provides scripts with access to Windows resources. Scripting engines provide the WSH with the ability to interpret statements written in a particular scripting language to a format that can be executed by an execution host.
By default, Microsoft supplies the following scripting engines with the WSH:. Microsoft designed the WSH in a modular fashion. This allows Microsoft to update the WSH on a component-by-component basis without having to rework the entire application in order to add new features and capabilities. This same architecture allows third-party software developers to add support for additional scripting engines.
This has already been done for a number of different scripting languages, as shown in Table 1. The choice of which scripting language to use when automating a Windows task is entirely up to the programmer. Once a scripting engine interprets a script, the script is ready to be executed.
This is the job of the script execution host. The WSH supplies two different script execution hosts, as outlined below. The only difference between the two script execution hosts is the ability of the WScript. Otherwise, both script execution hosts provide equivalent functionality. To run a script from the Windows desktop using the WScript. Like the Cscript. You can run a script from the Windows command prompt using the WScript. Likewise, you can run a script form the Windows command prompt using the CScript.
If you have any arguments that you need to pass to the script, type them separated by spaces after the script's name, as demonstrated below.
As a general rule, it is typical to use the CScript. When user interaction is required, it's generally better to do so using pop-up dialog boxes rather than the Windows command prompt, making the WScript. The WSH's core object model provides scripts with the ability to programmatically interact with and manipulate Windows resources, which the object model exposes or represents as objects. Examples of the objects exposed by the WSH object model include drives, printers, files, and shortcuts.
Every object exposed by the WSH object model has a collection of properties and methods. VBScripts can use these properties and methods to interact with and control these resources. Properties are object-specific attributes that describe or modify a particular feature or component of the object.
For example, a desktop shortcut has a file name and a file extension. The values of properties can be viewed and changed, thus having a direct impact on the shortcut. A method is a built-in WSH function. Methods can be used to take action on an object.
For example, methods exist that allow scripts to create and delete shortcuts. Using the methods and properties belonging to objects exposed by the WSH core object model, a VBScript can be developed that can automate tasks on any computer running Windows 95 or later where the WSH has been installed.
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It works similar to JavaScript when employed on the client-side in Internet Explorer. But there is no built-in support for it in other browsers such as Mozilla Firefox or Google Chrome or Opera, etc. Well, that story was of this on the front-end side. It is also used in developing Windows Applications.
Any standalone VBScript will have a. It is a case insensitive language, which means that any keyword or variable spelled the same way irrespective of a case whether an upper case or lower case is treated the same.
It supports decision making with if statements, if else statements, nested if statements and also switch statements. As it supports all the programming logic to implement, it has the following syntax to loop through the code. There are no significant advantages in this era over any other scripting languages that are existing.
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