Each HTML document loaded into the browser will become a Document Object.
The document object allows us to access all elements in the HTML page from the script.
Tip: The document object is part of the window object and can be accessed through the document DOC ument attribute.
IE: Internet Explorer, F: Firefox,
O: Opera, W3C: W3C standard.
| Set | Description | IE | F | O | W3C |
|---|---|---|---|---|---|
| All [] | Provides access to all HTML elements in the document. | 4 | 1 | 9 | No |
| Anchors [] | Returns a reference to all anchor objects in the document. | 4 | 1 | 9 | Yes |
| Applets | Returns a reference to all the applet objects in the document. | - | - | - | - |
| Forms [] | Returns reference to all form objects in the document. | 4 | 1 | 9 | Yes |
| Images [] | Returns a reference to all image objects in the document. | 4 | 1 | 9 | Yes |
| Links [] | Returns reference to all Area and Link objects in the document. | 4 | 1 | 9 | Yes |
| Attribute | Description | IE | F | O | W3C |
|---|---|---|---|---|---|
| Body | Provides direct access to the <body> element. For documents that define a framework set, this attribute references the <frameset> of the outermost layer. |
||||
| Cookie | Sets or returns all cookies related to the current document. | 4 | 1 | 9 | Yes |
| Domain | Returns the Domain Name of the current document. | 4 | 1 | 9 | Yes |
| Lastmodified | Returns the date and time when the document was last modified. | 4 | 1 | No | No |
| Referrer | Returns the URL of the document that loads the current document. | 4 | 1 | 9 | Yes |
| Title | Returns the title of the current document. | 4 | 1 | 9 | Yes |
| URL | Returns the URL of the current document. | 4 | 1 | 9 | Yes |
| Method | Description | IE | F | O | W3C |
|---|---|---|---|---|---|
| Close () | Close the output stream opened using document. open () and display the selected data. | 4 | 1 | 9 | Yes |
| Getelementbyid () | Returns a reference to the first object with the specified ID. | 5 | 1 | 9 | Yes |
| Getelementsbyname () | Returns a set of objects with the specified name. | 5 | 1 | 9 | Yes |
| Getelementsbytagname () | Returns an object set with the specified tag name. | 5 | 1 | 9 | Yes |
| Open () | Open a stream to collect output from any document. Write () or document. writeln () method. | 4 | 1 | 9 | Yes |
| Write () | Write HTML expressions or JavaScript code to the document. | 4 | 1 | 9 | Yes |
| Writeln () | It is equivalent to the write () method. The difference is that a line break is written after each expression. | 4 | 1 | 9 | Yes |
The htmldocument interface extends the DOM Document Interface and defines HTML-specific attributes and methods.
Many Attributes and methods are htmlcollection objects (in fact, read-only arrays that can be indexed with arrays or names), which store references to the anchor, forms, links, and other Scriptable elements.
These set attributes are derived from level 0 Dom. They have been
Document. getelementsbytagname () is replaced, but it is often used because it is convenient.
The write () method is worth noting that when a document is loaded and parsed, it allows a script to insert dynamically generated content into the document.
Note that in level 1 Dom, htmldocument defines
Getelementbyid () is a very useful method. In Level 2 Dom, this method has been transferred to the document interface, which is now inherited by htmldocument rather than defined by it.
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