Availability

JavaScript 1.1; JScript 2.0, ECMAScript v1

Synopsis

Number.POSITIVE_INFINITY

Description

Number.POSITIVE_INFINITY is a special numeric value returned when an arithmetic operation or mathematical function overflows or generates a value greater than the largest representable number in JavaScript (i.e., greater than Number.MAX_VALUE). Note that when numbers "underflow," or become less than Number.MIN_VALUE, JavaScript converts them to zero.

JavaScript displays the POSITIVE_INFINITY value as Infinity. This value behaves mathematically like infinity; for example, anything multiplied by infinity is infinity and anything divided by infinity is zero. In ECMAScript v1 and later, you can also use the predefined global constant Infinity instead of Number.POSITIVE_INFINITY.

See Also

Infinity, isFinite( )