List of options displayed in a dropdown/selectbox with a menu tree

Would it be possible to incorporate a treemenu within a dropdown/selectbox? My categories are structured like this:

<ul id="example">
<li>Category1
    <ul>
        <li><a href="http://www.autisticcuckoo.net">Category1 subcat1</a></li>
        <li><a href="http://www.zeldman.com">Category1 subcat2</a></li>
        <li><a href="http://www.meyerweb.com">Category1 subcat3</a></li>
    </ul>
</li>
<li>Other Sites
    <ul>
        <li><a href="http://www.accessify.com/">Category2</a></li>
        <li><a href="http://www.w3.org/">Category3</a>
            <ul>
                <li><a href="http://validator.w3.org/">Category3 subcat1</a></li>
                <li><a href="http://jigsaw.w3.org/css-validator/">Category3 subcat2</a></li>
                <li><a href="http://www.w3.org/TR/WAI-WEBCONTENT/">Category3 subcat3</a></li>
            </ul>
        </li>
    </ul>
</li>

I desire a tree menu style for my category listing. You can see an example of what I mean here: . Currently, I am using jQuery Chosen to display the selectbox. Is there any way to achieve this particular layout?

javascriptcssselecthtml-select

Answer №1

It is not possible to directly perform that action within a selectbox. However, you can create a workaround. Set up a container containing both the selectbox and an unordered list (ul) along with a button that reveals the list upon clicking. When an item in the list is clicked, map it to a corresponding item in the selectbox and update the visible button that activates the dropdown menu.

Answer №2

You are making things more complex than necessary. Why would someone want to merge a hierarchical menu into a select list? The purpose of a select list is to present a simple list of items. How would you even be able to track which item you selected from the tree menu (i.e., how do you determine the path of the selected items)?

If you can provide an example of how you intend to use this, I may be able to assist you further.

I have included an image. Is this the outcome you are aiming for?

What you're referring to is known as a tree menu.

The second image is from the jQuery Chosen website. If this is what you are looking for,

you can easily achieve it. 

<select>
        <optgroup label="fruits">
            <option>Apple</option>
            <option>Banana</option>
            <option>Orange</option>
        </optgroup>
        <optgroup label="vegetables">
            <option>Carrot</option>
            <option>Broccoli</option>
            <option>Lettuce</option>
        </optgroup>
        <optgroup label="drinks">
            <option>Water</option>
            <option>Juice</option>
            <option>Soda</option>
        </optgroup>
    </select>

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