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Comments

Users can place comments anywhere in the script. Comments are not evaluated, but can be used for documentation or temporarily disabling blocks of code.

JavaScript supports two types of comments:

  • Single-line comments start with // and end when the line ends.

  • Block comments start with /* and end with */. These can extend across multiple lines, or be used within a single line.

Example:

// This is a single-line comment
/* This is a
 * multi-line
 * comment.*/

Declaring Variables

Item

Description

Variable Declaration

Declare internal variables using the following format:

var variable_name;

The initial value of declared numerical variables is 0. To declare more than one variable, use a comma , between variables:

var variable_name_1, variable_name_2, ... , variable_name_n;

Users can use multiple var keywords before the program part starts.

Users can also define an initial value for the variable when declaring it using the following format:

var variable_name = 1;

Program Part

An example of a most basic statement is the function call, calculation, and storing of the result.

The following program example is composed of basic statements.

var_a = var_a + 1;

var_b = my_function(var_a, 2, 3);

Each statement must end with a semicolon “;”. Each function returns a single result to the caller. The program shown above stores the result of my_function to var_b.

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