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Instead, only one optgroup level is allowed. However, they do have to say the following on the subject: Note. Implementors are advised that future versions of HTML may extend the grouping mechanism to allow for nested groups (i.e., OPTGROUP elements may nest).
The <optgroup> tag is used to group related options in a <select> element (drop-down list). If you have a long list of options, groups of related options are easier to handle for a user.
The <optgroup> tag is used to create a group of options in a drop-down box in a <select> list. In most browsers, the option group is displayed as a hierarchy, with the form options
In HTML, the select element is used to create both multi-select lists and combo boxes. The various allowed options are each indicated with option elements. To group options together, use the optgroup element, with the related option elements inside that element.
25 lip 2024 · label. The name of the group of options, which the browser can use when labeling the options in the user interface. This attribute is mandatory if this element is used. Examples. html. <select> <optgroup label="Group 1"> <option>Option 1.1</option> </optgroup> <optgroup label="Group 2"> <option>Option 2.1</option> <option>Option 2.
The optgroup tag generates a group of options within a <select> control's dropdown list of values. A sequence of <option> tags define the dropdown values, which are then grouped using the <optgroup> tag.
Przeznaczenie atrybutu disabled. Atrybut disabled wykorzystany wraz z elementem optgroup pozwala nam określić czy dany element optgroup oraz treść reprezentowana przez zawartość danego elementu optgroup powinni zostać wyłączeni z interakcji z użytkownikiem.
