User Guide

Operators 117
+ addition operator
expression1 + expression2
Adds numeric expressions or concatenates (combines) strings. If one expression is a string, all
other expressions are converted to strings and concatenated. If both expressions are integers,
the sum is an integer; if either or both expressions are floating-point numbers, the sum is a
floating-point number.
{} (object initializer) Creates a new object and initializes it with the specified
name and value property pairs.
() (parentheses) Performs a grouping operation on one or more
parameters, performs sequential evaluation of
expressions, or surrounds one or more parameters and
passes them as parameters to a function outside the
parentheses.
=== (strict equality) Tests two expressions for equality; the strict equality
(=== )operator performs in the same way as the equality
(== ) operator, except that data types are not
converted.
!== (strict inequality) Tests for the exact opposite of the strict equality ( === )
operator.
" (string delimiter) When used before and after characters, quotation
marks (") indicate that the characters have a literal
value and are considered a string, not a variable,
numerical value, or other ActionScript element.
- (subtraction) Used for negating or subtracting.
-= (subtraction assignment) Assigns expression1 the value of expression1 -
expression2.
: (type) Used for strict data typing; this operator specifies the
variable type, function return type, or function
parameter type.
typeof The typeof operator evaluate the expression and
returns a string specifying whether the expression is a
String, MovieClip, Object, Function, Number,
or Boolean value.
void The void operator evaluates an expression and then
discards its value, returning undefined
Operator Description