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The global Infinity
property is a numeric value representing infinity.
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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 {{jsxref("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 |
---|---|---|
{{SpecName('ES1')}} | {{Spec2('ES1')}} | Initial definition. Implemented in JavaScript 1.3 |
{{SpecName('ES5.1', '#sec-15.1.1.2', 'Infinity')}} | {{Spec2('ES5.1')}} | |
{{SpecName('ES6', '#sec-value-properties-of-the-global-object-infinity', 'Infinity')}} | {{Spec2('ES6')}} | |
{{SpecName('ESDraft', '#sec-value-properties-of-the-global-object-infinity', 'Infinity')}} | {{Spec2('ESDraft')}} |
Browser compatibility
{{CompatibilityTable}}
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} |
See also
- {{jsxref("Number.NEGATIVE_INFINITY")}}
- {{jsxref("Number.POSITIVE_INFINITY")}}