MACROMEDIA FLASH MX 2004 - ACTIONSCRIPT Reference Manual page 260

== (equality)
Availability
Flash Player 5.
Usage
expression1 == expression2
Parameters
expression1,expression2
or function.
Returns
A Boolean value.
Description
Operator (equality); tests two expressions for equality. The result is
are equal.
The definition of equal depends on the data type of the parameter:
•
Numbers and Boolean values are compared by value, and are considered equal if they have the
same value.
•
String expressions are equal if they have the same number of characters and the characters
are identical.
•
Variables, objects, arrays, and functions are compared by reference. Two variables are equal if
they refer to the same object, array, or function. Two separate arrays are never considered equal,
even if they have the same number of elements.
Example
Usage 1: The following example uses the
a = "David" , b = "David";
if (a == b){
trace("David is David");
}
Usage 2: These examples show the results of operations that compare mixed types.
x = "5"; y = "5";
trace(x == y);
// true
x = "5"; y = "66";
trace(x ==y);
// false
x = "chris"; y = "steve";
trace (x == y);
//false
See also
!= (inequality)
260 Chapter 12: ActionScript Dictionary
A number, string, Boolean value, variable, object, array,
,
=== (strict equality)
operator with an
== if
,
!== (strict inequality)
if the expressions
true
statement: