MACROMEDIA FLASH 8-LEARNING ACTIONSCRIPT 2.0 IN FLASH Manual page 193

Except for the strict equality (
both operands are strings. If only one of the operands is a string, both operands convert to
numbers and perform a numeric comparison. For more information on strings and operators,
see "About using operators with strings" on page
operator precedence affect your ActionScript, see
associativity" on page
About assignment operators
The assignment operators take two operands and assign a value to one operand based on the
value of the other operand. All of the operators in this table have equal precedence:
Operator Operation performed
Assignment
=
Multiplication assignment
*=
Division assignment
/=
Modulo assignment
%=
Addition assignment
+=
Subtraction assignment
-=
Bitwise left shift assignment
<<=
Bitwise right shift assignment
>>=
Bitwise unsigned right shift assignment
>>>=
Bitwise AND assignment
&=
Bitwise XOR assignment
^=
Bitwise OR assignment
|=
For information on using assignment operators, see
on page 194.
) operator, the comparison operators compare strings only if
===
179.
182. For information on how order and
"About operator precedence and
"Using assignment operators"
About operators 193