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CSSStyleDeclaration JS Conversion


자바스크립트 문자열 프로토타입

예시

프로토타입 속성을 사용하여 지정된 유형의 모든 객체에 새 속성을 추가합니다.

function employee(name, jobtitle, born) {
  this.name = name;
  this.jobtitle = jobtitle;
  this.born = born;
}
employee.prototype.salary = 2000;

const fred = new employee("Fred Flintstone", "Caveman", 1970);

정의 및 사용

prototype모든 JavaScript 개체에서 사용할 수 있는 속성입니다 .

prototype속성을 사용하면 문자열에 새 속성과 메서드를 추가할 수 있습니다 .


통사론

object.prototype.name = value

경고

제어하지 않는 개체의 프로토타입을 변경하지 않는 것이 좋습니다.

다음과 같은 내장 JavaScript 데이터 유형의 프로토타입을 변경해서는 안 됩니다.

  • 번호
  • 문자열
  • 배열
  • 날짜
  • 부울
  • 기능
  • 사물

자신의 개체의 프로토타입만 변경하십시오.

프로토타입 속성

JavaScript prototype속성을 사용하면 개체에 새 속성을 추가할 수 있습니다.

예시

function Person(first, last, age, eyecolor) {
  this.firstName = first;
  this.lastName = last;
  this.eyeColor = eyecolor;
}

Person.prototype.nationality = "English";


브라우저 지원

prototype ECMAScript1(ES1) 기능입니다.

ES1(JavaScript 1997)은 모든 브라우저에서 완벽하게 지원됩니다.

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