Infinity - JavaScript | MDN
View originalCrawl details
- Best
Summary (TL;DR)
Infinity is a JavaScript global property holding the same value as Number.POSITIVE_INFINITY. It represents positive infinity, greater than any other number. The property is non-writable, non-enumerable, and non-configurable. Operations like 1/0 or 10**1000 return Infinity, while 1/Infinity equals 0. Math.log(0) returns -Infinity. The article provides examples and links to related properties like Number.NEGATIVE_INFINITY and Number.isFinite. It also includes browser compatibility information and references the ECMAScript 2027 specification.
Try it
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 Number.POSITIVE_INFINITY.
Property attributes of Infinity | |
|---|---|
| Writable | no |
| Enumerable | no |
| Configurable | no |
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 Number.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® 2027 Language Specification # sec-value-properties-of-the-global-object-infinity |
Browser compatibility
See also
Help improve MDN
Was this page helpful to you?Yes No
This page was last modified on by MDN contributors.
