Microsoft® JScript®
/= Operator
 Language Reference 
Version 1 

See Also

Used to divide a variable by an expression.
result /= expression

The /= operator syntax has these parts:

Part Description
result Any numeric variable.
expression Any numeric expression.

Using the /= operator is exactly the same as specifying:
result = result / expression
For information on when a run-time error is generated by the /= operator, see the Operator Behavior table.