VBScript Part 1: Introduction and Functions and Variable Declarations

Hi All,

VBscript is a programming language specifically used in Internet Explorer browsers. Client side VBScript is only supported by Internet Explorer. It is language developed by Microsoft.

Functions

To create a function, the syntax is as below: 

function main()

    ' comments

    ' coding

end function

Functions is used to perform actions required by the user.

Example of actions are as below:

To display a value returned from the database

To execute SQL statements

To form HTML statements - display check box, text box on the screen

To perform calculations

To return data from the database

Variable Declarations

The declaration of variable using VBScript is as below:

dim a

dim a,b

Assigning Variables

After declaring variables, we can assign values to the variables.

The syntax for assigning variables is as below:

dim a

dim b

a = "First variable"

b = "Second variable"

Differences between VBScript and Javascript

Please note that there are several differences between VBScript and Javascript.

1. The syntax of creating function is different for VBScript and Javascript. 

VBScript

function main

end function

Javascript

function testFunction()

{

}

2. Secondly, in VBScript, we can't assign variables using this method.

VBScript

dim a = "First variable"

Instead, we use this. 

dim a
a = "First variable"

Javascript

var a = "First variable" .

3. Declaration of variables

VBScript

We use the keyword, dim to declare a variable in VBScript. 

Javascript

We are using the keyword var to declare a variable in Javascript.