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Title: String.prototype.includes() - JavaScript | MDN

Open Graph Title: String.prototype.includes() - JavaScript | MDN

Description: includes() 메서드는 하나의 문자열이 다른 문자열에 포함되어 있는지를 판별하고, 결과를 true 또는 false 로 반환합니다. 검색 시 대소문자를 구분합니다.

Open Graph Description: includes() 메서드는 하나의 문자열이 다른 문자열에 포함되어 있는지를 판별하고, 결과를 true 또는 false 로 반환합니다. 검색 시 대소문자를 구분합니다.

Opengraph URL: https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes

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표준 내장 객체https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects
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String.prototype.includes()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes
https://github.com/orgs/mdn/discussions/739
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes
Learn more https://developer.mozilla.org/ko/docs/Glossary/Baseline/Compatibility
See full compatibility https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#브라우저_호환성
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시도해 보기https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#시도해_보기
구문https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#구문
설명https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#설명
예제https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#예제
명세https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#명세
브라우저 호환성https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#브라우저_호환성
같이 보기https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#같이_보기
시도해 보기https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#시도해_보기
구문https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#구문
매개변수https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#매개변수
searchStringhttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#searchstring
position Optionalhttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#position
반환값https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#반환값
예외https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#예외
TypeErrorhttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/TypeError
정규식일 경우https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/RegExp#special_handling_for_regexes
설명https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#설명
대소문자 구분https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#대소문자_구분
예제https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#예제
includes() 사용하기https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#includes_사용하기
명세https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#명세
ECMAScript® 2026 Language Specification# sec-string.prototype.includeshttps://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.includes
브라우저 호환성https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#브라우저_호환성
같이 보기https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes#같이_보기
core-js에서 String.prototype.includes의 폴리필https://github.com/zloirock/core-js#ecmascript-string-and-regexp
Array.prototype.includes()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Array/includes
TypedArray.prototype.includes()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/includes
String.prototype.indexOf()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/indexOf
String.prototype.lastIndexOf()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/lastIndexOf
String.prototype.startsWith()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
String.prototype.endsWith()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith
Learn how to contributehttps://developer.mozilla.org/ko/docs/MDN/Community/Getting_started
MDN contributorshttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes/contributors.txt
View this page on GitHubhttps://github.com/mdn/translated-content/blob/main/files/ko/web/javascript/reference/global_objects/string/includes/index.md?plain=1
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표준 내장 객체https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects
Stringhttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String
String() 생성자https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/String
String.fromCharCode()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/fromCharCode
String.fromCodePoint()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/fromCodePoint
String.raw()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/raw
String.prototype.anchor()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/anchor
String.prototype.at()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/at
String.prototype.big()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/big
String.prototype.blink()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/blink
String.prototype.bold()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/bold
String.prototype.charAt()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/charAt
String.prototype.charCodeAt()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/charCodeAt
String.prototype.codePointAt()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/codePointAt
String.prototype.concat()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/concat
String.prototype.endsWith()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith
String.prototype.fixed()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/fixed
String.prototype.fontcolor()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/fontcolor
String.prototype.fontsize()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/fontsize
String.prototype.includes()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/includes
String.prototype.indexOf()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/indexOf
String.prototype.isWellFormed()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/isWellFormed
String.prototype.italics()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/italics
String.prototype.lastIndexOf()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/lastIndexOf
String.prototype.link()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/link
String.prototype.localeCompare()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/localeCompare
String.prototype.match()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/match
matchAll()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/matchAll
String.prototype.normalize()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/normalize
String.prototype.padEnd()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/padEnd
String.prototype.padStart()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/padStart
String.prototype.repeat()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/repeat
String.prototype.replace()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/replace
String.prototype.replaceAll()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/replaceAll
String.prototype.search()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/search
String.prototype.slice()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/slice
String.prototype.small()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/small
String.prototype.split()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/split
String.prototype.startsWith()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
String.prototype.strike()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/strike
String.prototype.sub()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/sub
String.prototype.substr()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/substr
String.prototype.substring()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/substring
String.prototype.sup()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/sup
String.prototype.toLocaleLowerCase()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/toLocaleLowerCase
String.prototype.toLocaleUpperCase()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/toLocaleUpperCase
String.prototype.toLowerCase()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/toLowerCase
String.prototype.toString()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/toString
String.prototype.toUpperCase()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase
String.prototype.toWellFormed()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/toWellFormed
String.prototype.trim()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/trim
String.prototype.trimEnd()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/trimEnd
String.prototype.trimStart()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/trimStart
String.prototype.valueOf()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/valueOf
String.prototype[@@iterator]()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/Symbol.iterator
String.lengthhttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/String/length
Object/Functionhttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object
Function.prototype.apply()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Function/apply
Function.prototype.bind()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Function/bind
Function.prototype.call()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Function/call
Function.prototype.toSource()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Function/toString
Function.prototype[@@hasInstance]()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Function/Symbol.hasInstance
Function: displayNamehttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Function/displayName
Function.prototype.lengthhttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Function/length
Function: namehttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Function/name
Functionhttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Function
Function.argumentshttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Function/arguments
Function.prototype.callerhttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Function/caller
Object.prototype.__defineGetter__()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineGetter__
Object.prototype.__defineSetter__()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineSetter__
Object.prototype.__lookupGetter__()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupGetter__
Object.prototype.__lookupSetter__()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupSetter__
Object.prototype.hasOwnProperty()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
Object.prototype.isPrototypeOf()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object/isPrototypeOf
Object.prototype.propertyIsEnumerable()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object/propertyIsEnumerable
Object.prototype.toLocaleString()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object/toLocaleString
Object.prototype.toString()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
Object.prototype.valueOf()https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf
Object.prototype.__proto__https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object/proto
Object.prototype.constructorhttps://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object/constructor
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MDN Community https://developer.mozilla.org/en-US/community
Community resources https://developer.mozilla.org/en-US/docs/MDN/Community
Writing guidelines https://developer.mozilla.org/en-US/docs/MDN/Writing_guidelines
MDN Discord https://developer.mozilla.org/discord
MDN on GitHub https://github.com/mdn
Web technologies https://developer.mozilla.org/en-US/docs/Web
Learn web development https://developer.mozilla.org/en-US/docs/Learn_web_development
Guides https://developer.mozilla.org/en-US/docs/MDN/Guides
Tutorials https://developer.mozilla.org/en-US/docs/MDN/Tutorials
Glossary https://developer.mozilla.org/en-US/docs/Glossary
Hacks blog https://hacks.mozilla.org/
https://www.mozilla.org/
Website Privacy Noticehttps://www.mozilla.org/privacy/websites/
Telemetry Settingshttps://www.mozilla.org/en-US/privacy/websites/data-preferences/
Legalhttps://www.mozilla.org/about/legal/terms/mozilla
Community Participation Guidelineshttps://www.mozilla.org/about/governance/policies/participation/
Mozilla Corporation’shttps://www.mozilla.org/
Mozilla Foundationhttps://foundation.mozilla.org/
a Creative Commons licensehttps://developer.mozilla.org/docs/MDN/Writing_guidelines/Attrib_copyright_license

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URLs of crawlers that visited me.