Examples of scripting in JavaScript

Following examples show particular possibilities of programming in ObjectGears system using JavaScript.

For further information to JavaScript language we recommend web https://www.w3schools.com/js/default.asp.

 

Text strings

Texts are written in single or double quotations: "John Dew" or 'John Dew'.

Escape characters

JavaScript is using an escape character of backslash (\), which allows us to interprete special characters (e.g. simple or double quotations used to encapsulate texts) as usual characters. That will emable e.g. to use quotes or apostrophe inside texts etc. If we have inside texts the backslash character itself (e.g. when comparing domain name Domain\Username), we have to double it (in our example Domain\\Username).

More about special signs in https://www.w3schools.com/js/js_strings.asp.

Comments

Single line comments starts with //.

Example:

var y = 3 // declaring y and giving it value 3

Multi line comments begin with /* end end with */.

Example:

/*

This is a comment

to the following code...

*/.

You can use comments also to deactivate parts of your code.

Aritmetic operators 

Operator	Description
+	Addition
-	Subtraction
*	Multiplication
/	Division
%	Modulus (Remainder)
++	Increment
--	Decrement

 Comparison operators 

 

Operator	Description
==	equal to
===	equal value and equal type
!=	not equal
!==	not equal value or not equal type
>	greater than
>=	greater than or equal to
<	less than
<=	less than or equal to
?	ternary operator

Logical operators 

Operator	Description
&&	logical AND
||	logical OR
!	logical NOT

Operator for concatenating text strings

Operator	Description
+	concatenates two strings

Example: 'John' + ' ' + 'Dew' = 'John Dew'