프로그래밍 언어/HTML,CSS,JS

JavaScript 변수 이름에 유효한 문자 목록

Rateye 2022. 1. 17. 12:12
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질문 : JavaScript 변수 이름에 유효한 문자는 무엇입니까?

JavaScript 변수의 이름을 지정하는 데 사용할 수있는 문자는 무엇입니까?

여기 직장에서 자바 스크립트를 사용하지 않는 사용자를위한 작은 "확장 라이브러리"를 만들고 싶습니다 (언어에 관해서는 모두 짜증나는 것 같습니다). $ 달러 기호를 사용하는 방식을 좋아하고, jQuery를 사용하기 때문에 사용할 또 다른 멋진 단일 문자 기호를 찾고 있습니다.

몇 개의 캐릭터 만 테스트 할 수 있다는 것을 알고 있지만, (아마도 다른 인기있는 라이브러리와의 향후 통합을 고려하여) 시작할 캐릭터 목록의 범위를 좁히고 싶습니다.

답변

유효한 자바 스크립트 변수 이름 을 인용하려면 관련 사양 섹션을 요약 한 글을 작성했습니다.

식별자는 $ , _ 또는 유니 코드 범주 "대문자 (Lu)" , "소문자 (Ll)" , "제목 문자 (Lt)" , "수정 자 문자 (Lm)" , "기타"로 시작해야합니다. 문자 (Lo) " 또는 "문자 번호 (Nl) " .

나머지 문자열에는 동일한 문자와 U + 200C 폭이없는 비결 합자 문자, U + 200D 폭이없는 결합 자 문자 및 유니 코드 범주 "비 간격 표시 (Mn)" , "간격 결합"의 문자가 포함될 수 있습니다. mark (Mc) " , "Decimal digit number (Nd) " 또는 "Connector punctuation (Pc) " .

또한 입력 한 문자열이 ECMAScript 5.1 및 Unicode 6.1에 따라 유효한 JavaScript 변수 이름인지 알려주 는 도구 를 만들었습니다.

자바 스크립트 변수 이름 검사기

추신 : Anthony Mills의 대답이 얼마나 틀렸는 지 알려 드리기 위해 : JavaScript에 대한 단일 ASCII 전용 정규식으로 이러한 모든 규칙을 요약하면 11,236 자 길이가 됩니다. 여기있어:

// ES5.1 / Unicode 6.1
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출처 : https://stackoverflow.com/questions/1661197/what-characters-are-valid-for-javascript-variable-names
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