| Anchor | A named position in a document |
| Applet | A Java applet |
| Arguments | The arguments of a function |
| Array | Array creation and manipulation |
| Attr | An attribute of a document element |
| Boolean | A wrapper object for boolean values |
| Comment | An HTML comment |
| DOMException | Signals DOM errors |
| DOMImplementation | Creates documents, checks DOM features |
| Date | Manipulates dates and times |
| Document | An HTML document |
| DocumentFragment | Nodes to be manipulated together |
| Element | An HTML tag in a document |
| Error | Predefined exception types |
| Event | Event details |
| Form | An HTML input form |
| Function | A JavaScript function |
| Global | Global properties and functions |
| History | Browsing history |
| Image | An HTML image |
| Input | A form input element |
| Layer | An independent document layer |
| Link | An <a> or <area> link |
| Location | Current browser location |
| Math | Mathematical functions and constants |
| Navigator | Information about the browser |
| Node | A node in a document tree |
| Number | Support for numbers |
| Object | The superclass of all JavaScript objects |
| Option | A selectable option |
| RegExp | Regular expressions for pattern matching |
| Screen | Information about the display |
| Select | A graphical selection list |
| String | String manipulation |
| Style | Inline CSS properties of an element |
| Text | A run of text in a document |
| Textarea | Multiline text input |
| Window | Browser window or frame |