ECMAScript reserved words

ECMAScript reserved words

ECMA-262 defines a set of reserved words (reserved word) that ECMAScript supports.

Reserved words are words that are reserved for future keywords in some sense. Therefore, reserved words cannot be used as variable names or function names.

The complete list of reserved words in ECMA-262 Third edition is as follows:

Abstractbooleanbytecharclassconstdebuggerdoubleenumexportextendsfinalfloatgotoimplementsimportintinterfacelongnativepacka Geprivateprotectedpublicshortstaticsupersynchronizedthrowstransientvolatile

Note: If you use a reserved word as a variable or function name, you will likely not receive any error messages unless the reserved word is implemented by the future browser. When the browser implements it, the word is treated as a keyword, so a keyword error occurs.

ECMAScript reserved words