See Also

Description

Performs a logical conjunction on two expressions.

Syntax

result = expression1 && expression2

The && operator syntax has these parts:

Part	Description
result	Any variable.
expression1	Any expression.
expression2	Any expression.

Remarks

If, and only if, both expressions evaluate to True, result is True. If either expression evaluates to False, result is False.

For information on when a run-time error is generated by the && operator, see the Operator Behavior table.

JavaScript uses the following rules for converting non-Boolean values to Boolean values:

• All objects are considered true.
• Strings are considered false if, and only if, they are empty.
• null and undefined are considered false.
• Numbers are false if, and only if, they are zero.