HTML Selectedcontent in Customizable Selects (Limited Support)

A useful interface does not need to be complicated. Start with native HTML, then add JavaScript only when you need it.

What You Need to Know

Selectedcontent is part of an emerging customizable-select model. It can display content from the chosen option, but you should keep the underlying select usable when the new feature is unsupported.

Try the Example

Take a look at the example. We’ll explain the important lines right below it.

<label for="pet">Choose a pet</label>
<select id="pet" name="pet">
    <button><selectedcontent></selectedcontent></button>
    <option value="cat">Cat</option>
    <option value="dog">Dog</option>
</select>
<style>
    select, ::picker(select) { appearance: base-select; }
</style>

Let’s Read the Code

<label>: The label tells people what the input is for. A matching for/id pair makes the label clickable.
<select>: The select lets someone choose an item from a list.
for: For connects a label or output with a control by ID.
id: An id uniquely identifies an element on this page.

Read the named elements and attributes together. They explain how the browser connects this feature to the rest of the page.

What Happens in the Browser?

This feature has limited or experimental browser support. Check your target browsers before using it for something essential.

Do not depend on one browser. Some advanced HTML features are still being adopted. Check support before you build essential navigation or forms with them, and keep a simpler version that people can use if the advanced feature is unavailable.

Your Turn

Run this on a local development server if it loads modules or resources. Change the visible text or trigger and check what still works with scripts disabled.

Common Beginner Mistakes

Assuming new HTML syntax works in every browser without testing.
This feature has limited or experimental browser support. Keep a standard HTML fallback, and check compatibility before using it in a public site.

Key Takeaways

Selectedcontent is part of an emerging customizable-select model.
<label>: The label tells people what the input is for. A matching for/id pair makes the label clickable.
This lesson explains an emerging feature; it is not a promise that the feature works in every browser. Keep a usable fallback.