Number.parseFloat()

Number.parseFloat() 메서드는 문자열을 분석해 부동소수점 실수로 반환합니다.

구문

Number.parseFloat(string)

매개변수

value
변환할 값.

반환 값

주어진 값에서 분석한 부동소수점 수. 분석할 수 없으면 NaN.

설명

Number.parseFloat() 메서드는 전역 parseFloat() 함수와 같은 기능을 가지고 있습니다.

Number.parseFloat === parseFloat; // true

Number.parseFloat()는 ECMAScript 2015에서 전역 범위의 모듈화를 위해 추가됐습니다. 상세한 정보와 예제는 parseFloat()를 참고하세요.

폴리필

if (Number.parseFloat === undefined) {
    Number.parseFloat = parseFloat;
}

명세

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Number.parseFloat' in that specification.		 Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
The definition of 'Number.parseFloat' in that specification.		 Draft  

브라우저 호환성

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
parseFloatChrome Full support 34Edge Full support 12Firefox Full support 25IE No support NoOpera Full support 21Safari Full support 9WebView Android Full support ≤37Chrome Android Full support 34Firefox Android Full support 25Opera Android Full support 21Safari iOS Full support 9Samsung Internet Android Full support 2.0nodejs Full support 0.12

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같이 보기

관련 주제
  1. Standard built-in objects
  2. Number
  3. Properties
    1. Number.EPSILON
    2. Number.MAX_SAFE_INTEGER
    3. Number.MAX_VALUE
    4. Number.MIN_SAFE_INTEGER
    5. Number.MIN_VALUE
    6. Number.NEGATIVE_INFINITY
    7. Number.NaN
    8. Number.POSITIVE_INFINITY
    9. Number.prototype
  4. Methods
    1. Number.isFinite()
    2. Number.isInteger()
    3. Number.isNaN()
    4. Number.isSafeInteger()
    5. Number.parseFloat()
    6. Number.parseInt()
    7. Number.prototype.toExponential()
    8. Number.prototype.toFixed()
    9. Number.prototype.toLocaleString() [Translate]
    10. Number.prototype.toPrecision()
    11. Number.prototype.toSource() [Translate]
    12. Number.prototype.toString()
    13. Number.prototype.valueOf()
    14. Number.toInteger() [Translate]
  5. Inheritance:
  6. Function
  7. Properties
    1. Function.arguments
    2. Function.arity [Translate]
    3. Function.caller [Translate]
    4. Function.displayName [Translate]
    5. Function.length
    6. Function.name
    7. Function.prototype
  8. Methods
    1. Function.prototype.apply()
    2. Function.prototype.bind()
    3. Function.prototype.call()
    4. Function.prototype.isGenerator() [Translate]
    5. Function.prototype.toSource()
    6. Function.prototype.toString() [Translate]
  9. Object
  10. Properties
    1. Object.prototype.__count__ [Translate]
    2. Object.prototype.__noSuchMethod__ [Translate]
    3. Object.prototype.__parent__ [Translate]
    4. Object.prototype.__proto__ [Translate]
    5. Object.prototype.constructor
  11. Methods
    1. Object.prototype.__defineGetter__()
    2. Object.prototype.__defineSetter__() [Translate]
    3. Object.prototype.__lookupGetter__() [Translate]
    4. Object.prototype.__lookupSetter__() [Translate]
    5. Object.prototype.hasOwnProperty()
    6. Object.prototype.isPrototypeOf()
    7. Object.prototype.propertyIsEnumerable()
    8. Object.prototype.toLocaleString()
    9. Object.prototype.toSource() [Translate]
    10. Object.prototype.toString()
    11. Object.prototype.unwatch() [Translate]
    12. Object.prototype.valueOf()
    13. Object.prototype.watch() [Translate]
    14. Object.setPrototypeOf()