JavaScript/Reserved words

__NOTOC__ In JavaScript, some tokens (words) have a special semantic (meaning). Therefore they cannot be used as names of variables, functions, classes, etc ECMA: Keywords MDN: Keywords. Some of them are generally reserved words; others are reserved only in a special context; others are reserved for possible future usage without having a special functionality nowadays; others have been defined in outdated ECMAScript versions of the years 1997 - 99. The list of such special words as of 2022 follows. For some of the words, we offer further information. 10em abstract await boolean break byte case catch char class const continue debugger default delete do double else enum export extends false final finally float for function goto if implements import in instanceof int interface let long native new null package private protected public return short static super switch synchronized this throw throws transient true try typeof var void volatile while with yield Furthermore, there are predefined methods like forEach(), predefined modules like Math, or predefined objects like BigInt whose names should be avoided also. References 50em fr:Programmation JavaScript/Mots réservés pl:JavaScript/Słowa zarezerwowane tr:JavaScript/Anahtar kelimeler