[Chapter 21] Reference: Number.POSITIVE_INFINITY
Author: David Flanagan
Date: Fri Aug 29 11:18:28 1997

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| Chapter 21 JavaScript Reference |

# Number.POSITIVE_INFINITY Constant

## Name

Number.POSITIVE_INFINITY Constant---infinity

## Availability

Navigator 3.0

## Synopsis

    Number.POSITIVE_INFINITY

## Description

`Number.POSITIVE_INFINITY` is a special numeric value that is returned when an arithmetic operation or mathematical function generates a value greater than the largest representable number in JavaScript (i.e., greater than `Number.MAX_VALUE)`.

JavaScript displays the `POSITIVE_INFINITY` value as `Infinity`. This value behaves mathematically like an infinity--for example, anything multiplied by infinity is infinity, and anything divided by infinity is zero.

Note that when numbers "underflow," i.e., when they become less than `Number.MIN_VALUE,` JavaScript converts them to zero.

## See Also

"Number", "Number.NEGATIVE_INFINITY"

Number.NEGATIVE_INFINITY |  | Number.prototype