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According to the HTML5 spec (dev.w3.org/html5/markup/optgroup.html#optgroup) the only permitted parent of optgroup is select, which suggest that no, this is not supported in HTML5. –
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.
In this tutorial, we have explored the select, option, and optgroup elements in HTML forms. By understanding these elements and their attributes, you can create more organized and user-friendly dropdown lists in your forms.
25 lip 2024 · The <optgroup> HTML element creates a grouping of options within a <select> element. Try it. Note: Optgroup elements may not be nested. Attributes. This element includes the global attributes. disabled. If this Boolean attribute is set, none of the items in this option group is selectable.
11 paź 2024 · You can include a selected attribute on an <option> element to make it selected by default when the page first loads. A <select> element is represented in JavaScript by an HTMLSelectElement object, and this object has a value property which contains the value of the selected <option>.
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.
You can neatly group your options within a selection menu in order to provide a more structured layout in a long list of options by using the <optgroup> element. The syntax is very basic, by simply using the element with a label attribute to identify the title for the group, and containing zero or more options that should be within that group.
