← 返回首页
Number.EPSILON - JavaScript | MDN
HTML

HTML: Markup language

HTML reference HTML guides Markup languages
CSS

CSS: Styling language

CSS reference CSS guides Layout cookbook
JavaScriptJS

JavaScript: Scripting language

JS reference JS guides
Web APIs

Web APIs: Programming interfaces

Web API reference Web API guides
All

All web technology

Technologies Topics
Learn

Learn web development

Frontend developer course Learn HTML Learn CSS Learn JavaScript
Tools

Discover our tools

About

Get to know MDN better

Blog
Toggle sidebar
  1. 개발자를 위한 웹 기술
  2. JavaScript
  3. JavaScript 참고서
  4. 표준 내장 객체
  5. Number
  6. Number.EPSILON
Theme
  • OS default
  • Light
  • Dark
한국어
Remember language Learn more

This page was translated from English by the community. Learn more and join the MDN Web Docs community.

View in English Always switch to English

Number.EPSILON

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015년 9월.

Number.EPSILON 속성(property)은 Number 형으로 표현될 수 있는 1과 1보다 큰 값 중에서 가장 작은 값의, 차입니다.

당신은 이 정적 속성에 접근하기 위하여 Number 객체를 생성할 필요가 없습니다. Number.EPSILON을 쓰면 됩니다.

Property attributes of Number.EPSILON
쓰기 가능불가능
열거 가능불가능
설정 가능불가능

In this article

설명

이 EPSILON 속성은 대략 2.2204460492503130808472633361816E-16 또는 2^-52의 값을 갖습니다.

예제

동일성 확인하기

js
const x = 0.2, y = 0.3, z = 0.1; let equal = Math.abs(x - y + z) < Number.EPSILON;

명세

Specification
ECMAScript® 2027 Language Specification
# sec-number.epsilon

브라우저 호환성

Enable JavaScript to view this browser compatibility table.

관련된 문서

  • 이 속성을 가지고 있는 Number 객체

Help improve MDN

Was this page helpful to you?
Yes No
Learn how to contribute

This page was last modified on 2023년 8월 8일 by MDN contributors.

View this page on GitHub • Report a problem with this content
  1. 표준 내장 객체
  2. Number
  3. 생성자
    1. Number() 생성자
  4. 정적 메서드
    1. Number.isFinite()
    2. Number.isInteger()
    3. Number.isNaN()
    4. Number.isSafeInteger()
    5. Number.parseFloat()
    6. Number.parseInt()
  5. 정적 속성
    1. Number.EPSILON
    2. Number.MAX_SAFE_INTEGER
    3. Number.MAX_VALUE
    4. Number.MIN_SAFE_INTEGER
    5. Number.MIN_VALUE
    6. Number.NaN
    7. Number.NEGATIVE_INFINITY
    8. Number.POSITIVE_INFINITY
  6. 인스턴스 메서드
    1. Number.prototype.toExponential()
    2. Number.prototype.toFixed()
    3. Number.prototype.toLocaleString()
    4. Number.prototype.toPrecision()
    5. Number.prototype.toString()
    6. Number.prototype.valueOf()
  7. 상속
  8. Object/Function
  9. 정적 메서드
    1. Function.prototype.apply()
    2. Function.prototype.bind()
    3. Function.prototype.call()
    4. Function.prototype.toSource()
    5. Function.prototype[@@hasInstance]()
  10. 정적 속성
    1. Function: displayName
    2. Function.prototype.length
    3. Function: name
    4. Function
    5. Function.arguments
    6. Function.prototype.caller
  11. 인스턴스 메서드
    1. Object.prototype.__defineGetter__()
    2. Object.prototype.__defineSetter__()
    3. Object.prototype.__lookupGetter__()
    4. Object.prototype.__lookupSetter__()
    5. Object.prototype.hasOwnProperty()
    6. Object.prototype.isPrototypeOf()
    7. Object.prototype.propertyIsEnumerable()
    8. Object.prototype.toLocaleString()
    9. Object.prototype.toString()
    10. Object.prototype.valueOf()
  12. 인스턴스 속성
    1. Object.prototype.__proto__
    2. Object.prototype.constructor

Your blueprint for a better internet.

MDN Contribute Developers

Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.
Portions of this content are ©1998–2026 by individual mozilla.org contributors. Content available under a Creative Commons license.