Dentro de JavaScript nos encontramos con las siguientes palabras reservadas (las cuales no podremos usar como nombre de variables):
| abstract | boolean | break | byte |
| case | catch | char | class |
| const | continue | deault | do |
| double | else | extends | false |
| final | finally | float | for |
| function | goto | int | implements |
| input | in | instanceof | interface |
| long | native | new | null |
| package | private | protected | public |
| return | short | static | super |
| switch | synchronized | this | throw |
| throws | transient | true | try |
| var | val | while | with |