MACROMEDIA FLASH MX 2004 - ACTIONSCRIPT, Reference Manual

Page: 231 / 816

!== (strict inequality) 231
!== (strict inequality)
Availability
Flash Player 6.
Usage
expression1 !== expression2
Description
Operator; tests for the exact opposite of the
===
operator. The strict inequality operator performs
the same as the inequality operator except that data types are not converted. If
expression1
is
equal to
expression2
, and their data types are equal, the result is
false
. As with the
===
operator, the definition of equal depends on the data types being compared.
•
Numbers, strings, and Boolean values are compared by value.
•
Variables, objects, arrays, and functions are compared by reference.
Example
The following code displays the returned value of operations that use the equality, strict equality,
and strict inequality operators.
s1 = new String("5");
s2 = new String("5");
s3 = new String("Hello");
n = new Number(5);
b = new Boolean(true);
s1 == s2; // true
s1 == s3; // false
s1 == n; // true
s1 == b; // false
s1 === s2; // true
s1 === s3; // false
s1 === n; // false
s1 === b; // false
s1 !== s2; // false
s1 !== s3; // true
s1 !== n; // true
s1 !== b; // true
See also
!= (inequality)
,
== (equality)
,
=== (strict equality)