JavaScript: The Definitive Guide

24.91. Infinity: a numeric property that represents infinity

ECMAScript v1

24.91.1. Synopsis

Infinity

24.91.2. Description

Infinity is a global property that contains the special numeric value representing positive infinity. The Infinity property is not enumerated by for/in loops and cannot be deleted with the delete operator. Note that Infinity is not a constant and can be set to any other value, something that you should take care not to do. (Number.POSITIVE_INFINITY is a constant, however.)

24.91.3. See Also

isFinite( ), NaN, Number.POSITIVE_INFINITY