optgroup ... ⁄optgroup
HTML5 optgroup element
The optgroup element allows you to group the options from a list of options (within element) under a common label. »video
About optgroup
Display & support optgroup
- display in browser »video
Parents, children optgroup
- optgroup nested within elements »optgroup parents
- elements nested within optgroup »optgroup children
»examples
Attributes optgroup
- required: lable
- optional: disabled, global attributes, event attributes
Warning
The difference between Disabling an option and Disablig a group of options »video
Syntax optgroup
| 1 2 | <> ... </> <> ... » video |
Attributes and Values optgroup (comma separated)
| < | attribute | = | "attribute_value(s)" | > | Video | Examples |
|---|---|---|---|---|---|---|
| 1. specific attributes | ||||||
| 1. | disabled | = | "", , disabled | »video | < disabled> ... <⁄> | |
| 2. | label | = | string (optgroup_name) | »video | < label="optgroup_name"> ...<⁄> | |
| 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 optgroup element
HTML5 optgroup element: mark up a group of options
| min | video details |
|---|---|
| 00:00 | video tutorial: optgroup element |
| 00:05 | the optgroup element groups the options within select element under a common label |
| 00:14 | at this moment the options are not grouped, optgroup element is not present inside select element |
| 00:19 | these options can be grouped under a common label: GMT+ represents hours Est of Greenwich the common label can be: Est of Greenwich |
| 00:25 | while these options can be grouped under a common label: GMT- represents hours West of Greenwich the common label can be: West of Greenwich |
| 00:34 | adding the optgroup element in page + its required attribute: label attribute |
| 00:43 | adding the 2nd group |
| 00:51 | the 2 groups of options display; the options are now grouped under 2 groups: 1st group named: Est of Greenwich 2nd group named: West of Greenwich |
For more information about the element, please see the specs: W3C ⁄ WHATWG