Default Vertical Horizontal Flat Select MultiSelect SelectedFirst EmptyDefault Label LabelMultiSelect Overflow OverflowWrap PopoverOverflow Reset Footer SelectAll DisabledOptions NoTags CreateOptions Form DynamicTypeaheadSearch InfiniteScroll Performance PerformanceSelect DynamicOptions FilterDemo
An editable combobox with autocomplete behavior and selection support.
<div nve-layout="column gap:lg full">
<nve-combobox>
<label>label</label>
<input type="search" />
<datalist>
<option value="status"></option>
<option value="priority"></option>
<option value="date"></option>
<option value="session"></option>
<option value="configuration"></option>
<option value="contains"></option>
</datalist>
<nve-control-message>message</nve-control-message>
</nve-combobox>
<nve-combobox>
<label>disabled</label>
<input type="search" disabled />
<datalist>
<option value="status"></option>
<option value="priority"></option>
<option value="date"></option>
<option value="session"></option>
<option value="configuration"></option>
<option value="contains"></option>
</datalist>
<nve-control-message>message</nve-control-message>
</nve-combobox>
<nve-combobox>
<label>success</label>
<input type="search" />
<datalist>
<option value="status"></option>
<option value="priority"></option>
<option value="date"></option>
<option value="session"></option>
<option value="configuration"></option>
<option value="contains"></option>
</datalist>
<nve-control-message status="success">message</nve-control-message>
</nve-combobox>
<nve-combobox>
<label>error</label>
<input type="search" />
<datalist>
<option value="status"></option>
<option value="priority"></option>
<option value="date"></option>
<option value="session"></option>
<option value="configuration"></option>
<option value="contains"></option>
</datalist>
<nve-control-message status="error">message</nve-control-message>
</nve-combobox>
</div>
Edit Example
Vertical layout showing different combobox states (normal, disabled, success, error) stacked for comparison.
<div nve-layout="column gap:lg full">
<nve-combobox layout="horizontal">
<label>label</label>
<input type="search" />
<datalist>
<option value="status"></option>
<option value="priority"></option>
<option value="date"></option>
<option value="session"></option>
<option value="configuration"></option>
<option value="contains"></option>
</datalist>
<nve-control-message>message</nve-control-message>
</nve-combobox>
<nve-combobox layout="horizontal">
<label>disabled</label>
<input type="search" disabled />
<datalist>
<option value="status"></option>
<option value="priority"></option>
<option value="date"></option>
<option value="session"></option>
<option value="configuration"></option>
<option value="contains"></option>
</datalist>
<nve-control-message>message</nve-control-message>
</nve-combobox>
<nve-combobox layout="horizontal">
<label>success</label>
<input type="search" />
<datalist>
<option value="status"></option>
<option value="priority"></option>
<option value="date"></option>
<option value="session"></option>
<option value="configuration"></option>
<option value="contains"></option>
</datalist>
<nve-control-message status="success">message</nve-control-message>
</nve-combobox>
<nve-combobox layout="horizontal">
<label>error</label>
<input type="search" />
<datalist>
<option value="status"></option>
<option value="priority"></option>
<option value="date"></option>
<option value="session"></option>
<option value="configuration"></option>
<option value="contains"></option>
</datalist>
<nve-control-message status="error">message</nve-control-message>
</nve-combobox>
</div>
Edit Example
Horizontal layout showing different combobox states (normal, disabled, success, error) for inline form layouts.
<nve-combobox container="flat">
<nve-icon name="filter" slot="prefix-icon"></nve-icon>
<input type="search" aria-label="search" />
<datalist>
<option value="status"></option>
<option value="priority"></option>
<option value="date"></option>
<option value="session"></option>
<option value="configuration"></option>
<option value="contains"></option>
</datalist>
</nve-combobox>
Edit Example
Flat container style with prefix icon for compact inline filtering interfaces.
Single select allows users only to select from a predefined list of options. Invalid input is automatically cleared. All options are visible on focus until typing begins for filtering.
Multi select allows users to select many options from a predefined list. The select value will only reflect the first selected value. To get all selected options check the selected property on each <option> or the select property selectedOptions. On focus all options will show until the user starts typing. Select is the selection value of the combobox. The input is the filter value.
Multi-select that reorders selected options before unselected options after the combobox closes. Use when long filter lists need selected values to stay easy to review.
Combobox with an empty initial value using a disabled placeholder option. Use when no default selection exists and the user must make an explicit choice.
Combobox options with display labels that differ from underlying values. Use when option values are IDs or codes but users need to see human-readable text in the input.
Multi-select with labeled options where display text differs from option values.
Overflow behavior where many tags collapse into a simple text label when the parent container is too narrow.
Combobox with option to wrap tags when the parent container is too narrow. Input will span below the tags.
Popover Overflow
test-case
Combobox handling of long option text in constrained width containers.
<nve-combobox id="combobox-reset" style="width: 500px; --scroll-height: 220px">
<label>label</label>
<input type="search" />
<select multiple>
<option value="status"></option>
<option value="priority"></option>
<option value="date"></option>
<option value="session"></option>
<option value="configuration"></option>
<option value="contains"></option>
</select>
<nve-icon-button aria-label="clear selection" icon-name="cancel" container="inline"></nve-icon-button>
<nve-button slot="footer" aria-label="clear selection" container="flat">reset</nve-button>
<nve-control-message>message</nve-control-message>
</nve-combobox>
<script type="module">
document
.querySelector("#combobox-reset nve-icon-button")
.addEventListener("click", (e) => e.target.parentElement.reset());
document.querySelector("#combobox-reset nve-button").addEventListener("click", (e) => e.target.parentElement.reset());
</script>
Edit Example
Resets control value to initial attribute value and clears any active validation rules.
Multi-select with footer action button for extra operations on selected items.
<nve-combobox id="combobox-select-all" style="width: 500px; --scroll-height: 200px">
<label>label</label>
<input type="search" />
<select multiple>
<option value="status"></option>
<option value="priority"></option>
<option value="date"></option>
<option value="session"></option>
<option value="configuration"></option>
<option value="contains"></option>
<option value="includes"></option>
<option value="user"></option>
<option value="progress"></option>
</select>
<div slot="footer" nve-layout="row align:stretch full">
<nve-button container="flat">Select All</nve-button>
<nve-button container="flat">Deselect All</nve-button>
</div>
<nve-control-message>message</nve-control-message>
</nve-combobox>
<script type="module">
const combobox = document.querySelector("#combobox-select-all");
const [selectAll, deselectAll] = Array.from(combobox.querySelectorAll("nve-button"));
selectAll.addEventListener("click", () => combobox.selectAll());
deselectAll.addEventListener("click", () => combobox.reset());
combobox.addEventListener("change", (e) => console.log(e.target.selectedOptions));
</script>
Edit Example
Select all options provided
Multi-select with disabled options to show unavailable choices while maintaining visual context.
<form id="hidden-tags" nve-layout="column gap:lg align:stretch">
<nve-combobox tag-layout="hidden">
<label>label</label>
<input type="search" />
<select multiple>
<option selected value="status"></option>
<option selected value="priority"></option>
<option value="date"></option>
<option value="session"></option>
<option value="configuration"></option>
<option value="contains"></option>
</select>
</nve-combobox>
<div id="tags" nve-layout="row gap:xs"></div>
</form>
<script type="module">
const form = document.querySelector("#hidden-tags");
const select = form.querySelector("select");
const tags = form.querySelector("#tags");
updateTags();
select.addEventListener("change", (e) => updateTags());
tags.addEventListener("close", (e) => {
Array.from(select.options).find((o) => o.value === e.target.value).selected = false;
updateTags();
});
function updateTags() {
tags.innerHTML = "";
Array.from(select.selectedOptions).forEach(
(o) => (tags.innerHTML += '<nve-tag closable value="' + o.value + '">' + o.value + "</nve-tag>"),
);
}
</script>
Edit Example
Multi-select without built-in tags, using external tag management for custom selection display.
Combobox with create option behavior that allows users to add new options and tags on the fly. Use when the option list is not exhaustive and users need to enter values that don't yet exist.
<form nve-layout="column gap:lg align:stretch">
<nve-combobox style="--scroll-height: 220px">
<label>label</label>
<input type="search" name="input" />
<select multiple name="select" value="priority">
<option value="status"></option>
<option selected value="priority"></option>
<option selected value="date"></option>
<option value="session"></option>
<option value="configuration"></option>
<option value="contains"></option>
</select>
<nve-control-message>message</nve-control-message>
</nve-combobox>
<div nve-layout="row gap:xs">
<nve-button type="button">set</nve-button>
<nve-button type="reset">reset</nve-button>
<nve-button type="submit">submit</nve-button>
</div>
</form>
<script type="module">
const form = document.querySelector("form");
const select = document.querySelector("select");
const input = document.querySelector("input");
const btn = document.querySelector("[type=button]");
form.addEventListener("submit", (e) => {
e.preventDefault();
const formData = new FormData(form);
console.log("input: ", formData.get("input"));
console.log("select: ", formData.get("select"));
console.log(
"selectedOptions: ",
Array.from(select.selectedOptions).map((o) => o.value),
);
});
btn.addEventListener("click", () => {
select.value = "status";
select.options[0].selected = true;
input.value = "test";
});
</script>
Edit Example
Complete form integration showing combobox with form submission, reset, and programmatic value setting.
Dynamic Typeahead Search
pattern
<nve-combobox id="combobox">
<label>GPU Search</label>
<input type="search" placeholder="Type to search…" />
<datalist>
<option disabled selected></option>
</datalist>
</nve-combobox>
<script type="module">
const combobox = document.getElementById("combobox");
const input = combobox.querySelector("input");
const datalist = combobox.querySelector("datalist");
let controller = null;
input.addEventListener("input", async () => {
if (controller) controller.abort();
controller = new AbortController();
const query = input.value.trim();
if (!query) {
datalist.innerHTML = "";
return;
}
try {
const results = await mockFetch(query, controller.signal);
datalist.innerHTML = results.map((v) => '<option value="' + v + '">').join("");
} catch (err) {
if (err.name !== "AbortError") datalist.innerHTML = "";
}
});
function mockFetch(query, signal) {
return new Promise((resolve, reject) => {
const timer = setTimeout(() => {
resolve(
["A100 GPU", "H100 GPU", "H200 GPU", "DGX A100", "DGX H100", "CUDA Toolkit"].filter((v) =>
v.toLowerCase().startsWith(query.toLowerCase()),
),
);
}, 500);
signal.addEventListener("abort", () => {
clearTimeout(timer);
reject(new DOMException("Aborted", "AbortError"));
});
});
}
</script>
GPU Search
Edit Example
Fetches options asynchronously as the user types, cancelling stale requests with AbortController. Use for server-backed search where the full option set is too large to load up front.
Infinite scroll combobox loading, using the scroll event to append options as the user nears the end of the list. Use for server-backed datasets where loading all options up front is impractical.
Performance test with 1000 options to show filtering efficiency with large datasets.
<div nve-layout="pad:lg">
<nve-combobox id="performance-combobox">
<input type="search" aria-label="performance test" />
<select multiple></select>
</nve-combobox>
</div>
<script type="module">
const select = document.querySelector("#performance-combobox select");
const options = new Array(1000).fill("").map((_, i) => {
const option = document.createElement("option");
option.value = i + " item";
return option;
});
select.append(...options);
</script>
Edit Example
Performance test with 1000 options to show filtering efficiency with large datasets.
Dynamic Options
test-case
Dynamic options with datalist and select variants of combobox.
Interactive demo showing progressive filter chips with dynamic combobox creation for complex filtering interfaces.