The following table describes the behavior of most Microsoft JScript operators. The columns and rows represent the different types of expressions possible on either side of an operator in JScript, and the entries in the table describe the behavior.

An E indicates a run-time error. An N indicates a numeric result, or a Boolean result in the case of logical operators.

	obj	as	ns	num	bool	undef	null
obj	N	E	N	N	N	E	E
as	E	E	E	E	E	E	E
ns	N	E	N	N	N	E	E
num	N	E	N	N	N	E	E
bool	N	E	N	N	N	E	E
undef	E	E	E	E	E	E	E
null	E	E	E	E	E	E	E

obj = object, as = alphanumeric string, ns = numeric string, num = number, bool = Boolean, undef = undefined, null = null value.