When coding with JavaScript, it will benefit you to know certain reserved words. The following list contains JavaScript reserved words. You can’t use these words as JavaScript variables, functions, methods, loop labels, or object names.
| abstract | final | public |
| boolean | finally | return |
| break | float | short |
| byte | for | static |
| case | function | super |
| catch | goto | switch |
| char | if | synchronized |
| class | implements | this |
| const | import | throw |
| continue | in | throws |
| debugger | instanceof | transient |
| default | int | true |
| delete | interface | try |
| do | long | typeof |
| double | native | var |
| else | new | void |
| enum | null | volatile |
| export | package | while |
| extends | private | with |
| false | protected |