Web/JavaScript/Reference/Global objects/Infinity

The global property Infinity is a numeric value representing infinity.

Property attributes of `Infinity`
Writable	no
Enumerable	no
Configurable	no

Description

Infinity is a property of the global object. In other words, 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 slightly differently than mathematical infinity; see Number.POSITIVE_INFINITY for details.

As defined by the ECMAScript 5 specification, Infinity is read-only (implemented in JavaScript 1.8.5 / Firefox 4).

Examples

Using Infinity

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 */  
console.log(1 / 0             ); /* Infinity */

Specifications

Specification
ECMAScript (ECMA-262)The definition of 'Infinity' in that specification.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
`Infinity`	Chrome Full support 1	Edge Full support 12	Firefox Full support 1	IE Full support 4	Opera Full support 4	Safari Full support 1	WebView Android Full support 1	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 10.1	Safari iOS Full support 1	Samsung Internet Android Full support 1.0	nodejs Full support 0.1.100

Legend

Full support: Full support