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The global Infinity property is a numeric value representing infinity.

Property attributes of Infinity
Writable no
Enumerable no
Configurable no




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).


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 */  


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.
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Infinity' in that specification.
ECMAScript Latest Draft (ECMA-262)
The definition of 'Infinity' in that specification.


We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) (Yes) (Yes)
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)



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