JavaScript 保留了一些关键字,这些关键字在当前的语言版本中并没有使用,但在以后 JavaScript 扩展中会用到。
以下是 JavaScript 中最重要的保留字(按字母顺序):
abstract | else | instanceof | super |
---|---|---|---|
boolean | enum | int | switch |
break | export | interface | synchronized |
byte | extends | let | this |
case | false | long | throw |
catch | final | native | throws |
char | finally | new | transient |
class | float | null | true |
const | for | package | try |
continue | function | private | typeof |
debugger | goto | protected | var |
default | if | public | void |
delete | implements | return | volatile |
do | import | short | while |
double | in | static | with |