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The global Infinity
property is a numeric value representing infinity.
Property attributes of Infinity |
|
---|---|
Writable | no |
Enumerable | no |
Configurable | no |
The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.
Description
Infinity
is a property of the global object, or in other words, 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. Mathematically, this value behaves the same as infinity; for example, any positive number multiplied by Infinity
equals Infinity
, and any number divided by Infinity
equals 0.
As defined by 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 Latest Draft (ECMA-262) The definition of 'Infinity' in that specification. |
Draft |
Browser compatibility
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic support | Chrome Full support Yes | Edge Full support Yes | Firefox Full support 1 | IE Full support Yes | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Edge Mobile Full support Yes | Firefox Android Full support 4 | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes | nodejs Full support Yes |
Legend
- Full support
- Full support