files/en-us/web/javascript/reference/global_objects/infinity/index.md

metadata

title: Infinity
slug: Web/JavaScript/Reference/Global_Objects/Infinity
page-type: javascript-global-property
browser-compat: javascript.builtins.Infinity
sidebar: jssidebar

The Infinity global property is a numeric value representing infinity.

{{InteractiveExample("JavaScript Demo: Infinity")}}

const maxNumber = 10 ** 1000; // Max positive number

if (maxNumber === Infinity) {
  console.log("Let's call it Infinity!");
  // Expected output: "Let's call it Infinity!"
}

console.log(1 / maxNumber);
// Expected output: 0

Value

The same number value as {{jsxref("Number.POSITIVE_INFINITY")}}.

{{js_property_attributes(0, 0, 0)}}

Description

Infinity is a property of the global object. In other words, it is a variable in global scope.

The value Infinity (positive infinity) is greater than any other number.

This value behaves slightly differently than mathematical infinity; see {{jsxref("Number.POSITIVE_INFINITY")}} for details.

Examples

Using Infinity

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

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{jsxref("Number.NEGATIVE_INFINITY")}}
• {{jsxref("Number.POSITIVE_INFINITY")}}
• {{jsxref("Number.isFinite")}}