Infinity

The global Infinity property is a numeric value representing infinity.

Property attributes of Infinity
Writable	no
Enumerable	no
Configurable	no

Syntax

Infinity 

Description

Infinity is a property of the global object, i.e. it is a variable in global scope.

The initial value of Infinity is Number.POSITIVE_INFINITY. The value Infinity (positive infinity) is greater than any other number. This value behaves mathematically like infinity; for example, any positive number multiplied by Infinity is Infinity, and anything divided by Infinity is 0.

Per the ECMAScript 5 specification, Infinity is read only (implemented in JavaScript 1.8.5 / Firefox 4).

Examples

console.log(Infinity          ); /* Infinity */  
console.log(Infinity + 1      ); /* Infinity */  
console.log(Math.pow(10, 1000)); /* Infinity */  
console.log(Math.log(0)       ); /* -Infinity */  
console.log(1 / Infinity      ); /* 0 */  

Specifications

Specification	Status	Comment
ECMAScript 1st Edition (ECMA-262)	Standard	Initial definition. Implemented in JavaScript 1.3
ECMAScript 5.1 (ECMA-262) The definition of 'Infinity' in that specification.	Standard
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Infinity' in that specification.	Standard
ECMAScript 2017 Draft (ECMA-262) The definition of 'Infinity' in that specification.	Draft

Browser compatibility

See also

• Number.NEGATIVE_INFINITY
• Number.POSITIVE_INFINITY
• Number.isFinite