Movatterモバイル変換


[0]ホーム

URL:


MDN Web Docs

Infinity

BaselineWidely available

TheInfinity global property is a numeric value representing infinity.

Try it

const maxNumber = 10 ** 1000; // Max positive numberif (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 asNumber.POSITIVE_INFINITY.

Property attributes ofInfinity
Writableno
Enumerableno
Configurableno

Description

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

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

This value behaves slightly differently than mathematical infinity; seeNumber.POSITIVE_INFINITY for details.

Examples

Using Infinity

js
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

Specification
ECMAScript® 2026 Language Specification
# sec-value-properties-of-the-global-object-infinity

Browser compatibility

See also

Help improve MDN

Learn how to contribute.

This page was last modified on byMDN contributors.


[8]ページ先頭

©2009-2025 Movatter.jp