关键字与保留字(了解)
特定用途的关键字，来表示控制语句的开始或结束，或用于执行特定的操作。但是不能用作标识符
| break | do | instanceof | typeof |
|---|---|---|---|
| case | else | new | var |
| catch | finally | return | void |
| continue | for | switch | while |
| debugger* | function | this | with |
| default | if | throw | |
| delete | in | try | 关键字 |
保留字
| abstract | enum | int | short |
|---|---|---|---|
| boolean | export | interface | static |
| byte | extends | long | super |
| char | final | native | synchronized |
| class | float | package | throws |
| const | goto | private | transient |
| debugger | implements | protected | volatile |
| double | import | public | 保留字 |
…