Reserved Words
This is the complete list of reserved words in JavaScript. Do not use them as an identifier (for the name of a variable, for the name of a function).
| abstract | Reserved for later use. |
| boolean | Reserved for later use. |
| break | JavaScript statement |
| byte | Reserved for later use. |
| case | JavaScript statement |
| catch | JavaScript statement |
| char | Reserved for later use. |
| class | Reserved for later use. |
| const | JavaScript statement |
| continue | JavaScript statement |
| debugger | JavaScript statement |
| default | JavaScript statement |
| delete | JavaScript operator |
| do | JavaScript statement |
| double | Reserved for later use. |
| each | JavaScript statement |
| else | JavaScript statement |
| enum | Reserved for later use. |
| export | JavaScript statement |
| extends | Reserved for later use. |
| false | Primitive boolean value |
| final | Reserved for later use. |
| finally | JavaScript statement |
| float | Reserved for later use. |
| for | JavaScript statement |
| function | JavaScript statement |
| get | JavaScript operator |
| goto | Reserved for later use. |
| if | JavaScript statement |
| implements | Reserved for later use. |
| import | JavaScript statement |
| in | Can be a part of a JavaScript statement (for...in), for each...in) or an operator (in operator). |
| instanceof | JavaScript operator |
| int | Reserved for later use. |
| interface | Reserved for later use. |
| long | Reserved for later use. |
| native | Reserved for later use. |
| new | JavaScript operator |
| null | The null object is a special JavaScript object. It does not have any members. Typically the DOM methods use this object as a return value if the required structure does not exist. For example, document.getElementById ("test") returns null if the document does not have an element with id 'test'. |
| package | Reserved for later use. |
| private | Reserved for later use. |
| protected | Reserved for later use. |
| public | Reserved for later use. |
| return | JavaScript statement |
| set | JavaScript operator |
| short | Reserved for later use. |
| static | Reserved for later use. |
| super | Reserved for later use. |
| switch | JavaScript statement |
| synchronized | Reserved for later use. |
| this | JavaScript statement |
| throw | JavaScript statement |
| throws | Reserved for later use. |
| transient | Reserved for later use. |
| true | Primitive boolean value |
| try | JavaScript statement |
| typeof | JavaScript operator |
| var | JavaScript statement |
| void | JavaScript operator |
| volatile | Reserved for later use. |
| while | JavaScript statement (while or do...while) |
| with | JavaScript statement |
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