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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.
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Definition and Usage. The <option> tag defines an option in...
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When present, it specifies that an option-group should be...
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25 lip 2024 · The <optgroup> HTML element creates a grouping of options within a <select> element.
11 lip 2016 · By using the optgroup tag. Here is an example: <select name="browser">. <optgroup label="Firefox">. <option value="2.0 or higher">. Firefox 2.0 or higher. </option>. <option value="1.5.x">Firefox 1.5.x</option>. <option value="1.0.x">Firefox 1.0.x</option>.
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>.
9 kwi 2012 · OPTGROUP. Grupuje opcje (OPTION) w liście wyboru (SELECT). Zobacz więcej... Atrybuty: CLASS="klasa". Przypisuje nazwę klasy (CSS) lub nazwy klas do elementu, które muszą być rozdzielone białymi znakami. DIR="kierunek".
The <optgroup> tag organizes a set of <option> tags into an option group with a group heading. The label value for the <optgroup> will appear as a gray heading. All of the grouped items will appear below the heading as an indented list of options.
The <optgroup> HTML element creates a grouping of options within a <select> element.
