dfn ... ⁄dfn
HTML5 dfn element
The dfn element allows you to mark up a definition term. »video
About dfn
- is an optional element
- multiple dfn elements allowed per HTML5 document
Display & support dfn
- display in browser »video
- display type: inline
Parents, children dfn
- dfn nested within elements »dfn parents
- elements nested within dfn »dfn children
»examples
Attributes dfn
- required: none
- optional: global attributes, event attributes
Observation: title attribute (part of global attributes) if present on dfn element, has a different semantic »video
Syntax dfn
| 1 | <> ... </> »video |
Attributes and Values dfn (comma separated)
| < | attribute | = | "attribute_value(s)" | > | Video | Examples |
|---|---|---|---|---|---|---|
| 1. specific attributes | ||||||
| All Specific Attributes | ||||||
| 2. global attributes | ||||||
| 1. | accesskey | = | keyboard key | »img | < accesskey="h"> ... </> | |
| 2. | class | = | class name | »html »img | < class="class_name"> ... </> | |
| 3. | contenteditable | = | "", , true, false | »html | < contenteditable="true"> ... </> | |
| 4. | contextmenu | = | menu id value | »html | < contextmenu="menu_id_value"> ... </> | |
| 5. | data-* | = | value | - | < data-http-error="404"> ... </> | |
| 6. | dir | = | ltr, rtl, auto | »html | < dir="ltr"> ... </> | |
| 7. | draggable | = | true, , false | »img | < draggable="false"> ... </> | |
| 8. | dropzone | = | copy, move, link, string:, file: | - | < dropzone="copy"> ... </> | |
| 9. | hidden | = | "", , hidden | »html »img | < hidden="hidden"> ... </> | |
| 10. | id | = | id name | »html »img | < id="unique_id_name"> ... </> | |
| 11. | itemid | = | URL | - | - | |
| 12. | itemprop | = | string | »link »a | - | |
| 13. | itemref | = | string | - | - | |
| 14. | itemscope | = | "", , itemscope | - | - | |
| 15. | itemtype | = | absolute URL | - | - | |
| 16. | lang | = | language code | »html »head»title »img | < lang="en"> ... </> | |
| 17. | spellcheck | = | "", , true, false | »html | < spellcheck="true"> ... </> | |
| 18. | style | = | CSS property:value | »html »img | < style="color:red"> ... </> | |
| 19. | tabindex | = | integer | »img | < tabindex="3"> ... </> | |
| 20. | title | = | text | »html »link»style »abbr»dfn »img »meter | < title="html page"> ... </> | |
| 21. | translate | = | "", yes, no | »html »img | < translate="yes"> ... </> | |
| All Global Attributes | ||||||
| 3. global event attributes | ||||||
| 1. | onclick | = | script | » list | <element onclick="script" > ... | |
| 2. | ondblclick | = | script | » list | <element ondblclick="script" > ... | |
| All Event Attributes | ||||||
Video demonstration dfn element
HTML5 dfn element: mark up a definition term
| min | video details |
|---|---|
| 00:00 | video tutorial: dfn element |
| 00:05 | dfn element allows you to mark a term that is going to be defined next (a definition term) |
| 00:12 | for example, if you want to define the IP term, you need to mark it properly using the dfn element |
| 00:20 | followed next by its definition |
| 00:23 | since this content represents a paragraph, we can mark it properly using p element |
| 00:37 | the term that is being defined (IP) and its definition |
| 00:43 | in this case the defined term, IP, represents the abbreviation for Internet Protocol, thus we can mark it using abbr element abbr nested inside dfn, dfn nested inside p |
| 00:53 | no change in display |
| 00:56 | defining an abbreviated term is one case, but just as well we can use the extended form of IP, in which case we don't need the abbr element anymore |
For more information about the element, please see the specs: W3C ⁄ WHATWG