Popup

Popup is a utility that lets you declaratively anchor “popup” containers to another element.

Examples

Popup Basics

This component’s name is inspired by <popup>. It uses Floating UI under the hood to provide a well-tested, lightweight, and fully declarative positioning utility for tooltips, dropdowns, and more.

Popup doesn’t provide any styles — just positioning! The popup’s preferred placement, distance, and skidding (offset) can be configured using attributes. An arrow that points to the anchor can be shown and customized to your liking. Additional positioning options are available and described in more detail below.

<div class="popup-overview">
  <sl-popup placement="top" active>
    <span slot="anchor"></span>
    <div class="box"></div>
  </sl-popup>

  <div class="popup-overview-options">
    <sl-select label="Placement" name="placement" value="top" class="popup-overview-select">
      <sl-option value="top">top</sl-option>
      <sl-option value="top-start">top-start</sl-option>
      <sl-option value="top-end">top-end</sl-option>
      <sl-option value="bottom">bottom</sl-option>
      <sl-option value="bottom-start">bottom-start</sl-option>
      <sl-option value="bottom-end">bottom-end</sl-option>
      <sl-option value="right">right</sl-option>
      <sl-option value="right-start">right-start</sl-option>
      <sl-option value="right-end">right-end</sl-option>
      <sl-option value="left">left</sl-option>
      <sl-option value="left-start">left-start</sl-option>
      <sl-option value="left-end">left-end</sl-option>
    </sl-select>
    <sl-input type="number" name="distance" label="distance" value="0"></sl-input>
    <sl-input type="number" name="skidding" label="Skidding" value="0"></sl-input>
  </div>

  <div class="popup-overview-options">
    <sl-switch name="active" checked>Active</sl-switch>
    <sl-switch name="arrow">Arrow</sl-switch>
  </div>
</div>

<script>
  const container = document.querySelector('.popup-overview');
  const popup = container.querySelector('sl-popup');
  const select = container.querySelector('sl-select[name="placement"]');
  const distance = container.querySelector('sl-input[name="distance"]');
  const skidding = container.querySelector('sl-input[name="skidding"]');
  const active = container.querySelector('sl-switch[name="active"]');
  const arrow = container.querySelector('sl-switch[name="arrow"]');

  select.addEventListener('sl-change', () => (popup.placement = select.value));
  distance.addEventListener('sl-input', () => (popup.distance = distance.value));
  skidding.addEventListener('sl-input', () => (popup.skidding = skidding.value));
  active.addEventListener('sl-change', () => (popup.active = active.checked));
  arrow.addEventListener('sl-change', () => (popup.arrow = arrow.checked));
</script>

<style>
  .popup-overview sl-popup {
    --arrow-color: var(--sl-color-primary-600);
  }

  .popup-overview span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-overview .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-overview-options {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: 1rem;
  }

  .popup-overview-options sl-select {
    width: 160px;
  }

  .popup-overview-options sl-input {
    width: 100px;
  }

  .popup-overview-options + .popup-overview-options {
    margin-top: 1rem;
  }
</style>

div.popup-overview
  sl-popup placement="top" active="true"
    span slot="anchor"
    div.box
  div.popup-overview-options
    sl-select.popup-overview-select label="Placement" name="placement" value="top"
      sl-option value="top" top
      sl-option value="top-start" top-start
      sl-option value="top-end" top-end
      sl-option value="bottom" bottom
      sl-option value="bottom-start" bottom-start
      sl-option value="bottom-end" bottom-end
      sl-option value="right" right
      sl-option value="right-start" right-start
      sl-option value="right-end" right-end
      sl-option value="left" left
      sl-option value="left-start" left-start
      sl-option value="left-end" left-end
    sl-input type="number" name="distance" label="distance" value="0"
    sl-input type="number" name="skidding" label="Skidding" value="0"
  div.popup-overview-options
    sl-switch name="active" checked="true" Active
    sl-switch name="arrow" Arrow

javascript:
  const container = document.querySelector(.popup-overview);
  const popup = container.querySelector(sl-popup);
  const select = container.querySelector(sl-select[name=placement]);
  const distance = container.querySelector(sl-input[name=distance]);
  const skidding = container.querySelector(sl-input[name=skidding]);
  const active = container.querySelector(sl-switch[name=active]);
  const arrow = container.querySelector(sl-switch[name=arrow]);

  select.addEventListener(sl-change, () => (popup.placement = select.value));
  distance.addEventListener(sl-input, () => (popup.distance = distance.value));
  skidding.addEventListener(sl-input, () => (popup.skidding = skidding.value));
  active.addEventListener(sl-change, () => (popup.active = active.checked));
  arrow.addEventListener(sl-change, () => (popup.arrow = arrow.checked));

css:
  .popup-overview sl-popup {
    --arrow-color: var(--sl-color-primary-600);
  }

  .popup-overview span[slot=anchor] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-overview .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-overview-options {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: 1rem;
  }

  .popup-overview-options sl-select {
    width: 160px;
  }

  .popup-overview-options sl-input {
    width: 100px;
  }

  .popup-overview-options + .popup-overview-options {
    margin-top: 1rem;
  }

import { useState } from 'react';
import SlPopup from '@teamshares/shoelace/dist/react/popup';
import SlSelect from '@teamshares/shoelace/dist/react/select';
import SlMenuItem from '@teamshares/shoelace/dist/react/menu-item';
import SlInput from '@teamshares/shoelace/dist/react/input';
import SlSwitch from '@teamshares/shoelace/dist/react/switch';

const css = `
  .popup-overview sl-popup {
    --arrow-color: var(--sl-color-primary-600);
  }

  .popup-overview span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-overview .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-overview-options {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: 1rem;
  }

  .popup-overview-options sl-select {
    width: 160px;
  }

  .popup-overview-options sl-input {
    width: 100px;
  }

  .popup-overview-options + .popup-overview-options {
    margin-top: 1rem;
  }
`;

const App = () => {
  const [placement, setPlacement] = useState('top');
  const [distance, setDistance] = useState(0);
  const [skidding, setSkidding] = useState(0);
  const [active, setActive] = useState(true);
  const [arrow, setArrow] = useState(false);

  return (
    <>
      <div className="popup-overview">
        <SlPopup
          placement={placement}
          active={active || null}
          distance={distance}
          skidding={skidding}
          arrow={arrow || null}
        >
          <span slot="anchor" />
          <div className="box" />
        </SlPopup>

        <div className="popup-overview-options">
          <SlSelect
            label="Placement"
            name="placement"
            value={placement}
            className="popup-overview-select"
            onSlChange={event => setPlacement(event.target.value)}
          >
            <SlMenuItem value="top">top</SlMenuItem>
            <SlMenuItem value="top-start">top-start</SlMenuItem>
            <SlMenuItem value="top-end">top-end</SlMenuItem>
            <SlMenuItem value="bottom">bottom</SlMenuItem>
            <SlMenuItem value="bottom-start">bottom-start</SlMenuItem>
            <SlMenuItem value="bottom-end">bottom-end</SlMenuItem>
            <SlMenuItem value="right">right</SlMenuItem>
            <SlMenuItem value="right-start">right-start</SlMenuItem>
            <SlMenuItem value="right-end">right-end</SlMenuItem>
            <SlMenuItem value="left">left</SlMenuItem>
            <SlMenuItem value="left-start">left-start</SlMenuItem>
            <SlMenuItem value="left-end">left-end</SlMenuItem>
          </SlSelect>
          <SlInput
            type="number"
            name="distance"
            label="distance"
            value={distance}
            onSlInput={event => setDistance(event.target.value)}
          />
          <SlInput
            type="number"
            name="skidding"
            label="Skidding"
            value={skidding}
            onSlInput={event => setSkidding(event.target.value)}
          />
        </div>

        <div className="popup-overview-options">
          <SlSwitch checked={active} onSlChange={event => setActive(event.target.checked)}>
            Active
          </SlSwitch>
          <SlSwitch checked={arrow} onSlChange={event => setArrow(event.target.checked)}>
            Arrow
          </SlSwitch>
        </div>
      </div>

      <style>{css}</style>
    </>
  );
};

Activating

Popups are inactive and hidden until the active attribute is applied. Removing the attribute will tear down all positioning logic and listeners, meaning you can have many idle popups on the page without affecting performance.

<div class="popup-active">
  <sl-popup placement="top" active>
    <span slot="anchor"></span>
    <div class="box"></div>
  </sl-popup>

  <br />
  <sl-switch checked>Active</sl-switch>
</div>

<style>
  .popup-active span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-active .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }
</style>

<script>
  const container = document.querySelector('.popup-active');
  const popup = container.querySelector('sl-popup');
  const active = container.querySelector('sl-switch');

  active.addEventListener('sl-change', () => (popup.active = active.checked));
</script>

div.popup-active
  sl-popup placement="top" active="true"
    span slot="anchor"
    div.box
  br
  sl-switch checked="true" Active

css:
  .popup-active span[slot=anchor] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-active .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

javascript:
  const container = document.querySelector(.popup-active);
  const popup = container.querySelector(sl-popup);
  const active = container.querySelector(sl-switch);

  active.addEventListener(sl-change, () => (popup.active = active.checked));

import { useState } from 'react';
import SlPopup from '@teamshares/shoelace/dist/react/popup';
import SlSwitch from '@teamshares/shoelace/dist/react/switch';

const css = `
  .popup-active span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-active .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }
`;

const App = () => {
  const [active, setActive] = useState(true);

  return (
    <>
      <div className="popup-active">
        <SlPopup placement="top" active={active}>
          <span slot="anchor" />
          <div className="box" />
        </SlPopup>

        <br />
        <SlSwitch checked={active} onSlChange={event => setActive(event.target.checked)}>
          Active
        </SlSwitch>
      </div>

      <style>{css}</style>
    </>
  );
};

External Anchors

By default, anchors are slotted into the popup using the anchor slot. If your anchor needs to live outside of the popup, you can pass the anchor’s id to the anchor attribute. Alternatively, you can pass an element reference to the anchor property to achieve the same effect without using an id.

<span id="external-anchor"></span>

<sl-popup anchor="external-anchor" placement="top" active>
  <div class="box"></div>
</sl-popup>

<style>
  #external-anchor {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px 0 0 50px;
  }

  #external-anchor ~ sl-popup .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }
</style>

span#external-anchor
sl-popup anchor="external-anchor" placement="top" active="true"
  div.box

css:
  #external-anchor {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px 0 0 50px;
  }

  #external-anchor ~ sl-popup .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

import SlPopup from '@teamshares/shoelace/dist/react/popup';

const css = `
  #external-anchor {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px 0 0 50px;
  }

  #external-anchor ~ sl-popup .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }
`;

const App = () => {
  return (
    <>
      <span id="external-anchor" />

      <SlPopup anchor="external-anchor" placement="top" active>
        <div class="box" />
      </SlPopup>

      <style>{css}</style>
    </>
  );
};

Placement

Use the placement attribute to tell the popup the preferred placement of the popup. Note that the actual position will vary to ensure the panel remains in the viewport if you’re using positioning features such as flip and shift.

Since placement is preferred when using flip, you can observe the popup’s current placement when it’s active by looking at the data-current-placement attribute. This attribute will update as the popup flips to find available space and it will be removed when the popup is deactivated.

<div class="popup-placement">
  <sl-popup placement="top" active>
    <span slot="anchor"></span>
    <div class="box"></div>
  </sl-popup>

  <sl-select label="Placement" value="top">
    <sl-option value="top">top</sl-option>
    <sl-option value="top-start">top-start</sl-option>
    <sl-option value="top-end">top-end</sl-option>
    <sl-option value="bottom">bottom</sl-option>
    <sl-option value="bottom-start">bottom-start</sl-option>
    <sl-option value="bottom-end">bottom-end</sl-option>
    <sl-option value="right">right</sl-option>
    <sl-option value="right-start">right-start</sl-option>
    <sl-option value="right-end">right-end</sl-option>
    <sl-option value="left">left</sl-option>
    <sl-option value="left-start">left-start</sl-option>
    <sl-option value="left-end">left-end</sl-option>
  </sl-select>
</div>

<style>
  .popup-placement span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-placement .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-placement sl-select {
    max-width: 280px;
  }
</style>

<script>
  const container = document.querySelector('.popup-placement');
  const popup = container.querySelector('sl-popup');
  const select = container.querySelector('sl-select');

  select.addEventListener('sl-change', () => (popup.placement = select.value));
</script>

div.popup-placement
  sl-popup placement="top" active="true"
    span slot="anchor"
    div.box
  sl-select label="Placement" value="top"
    sl-option value="top" top
    sl-option value="top-start" top-start
    sl-option value="top-end" top-end
    sl-option value="bottom" bottom
    sl-option value="bottom-start" bottom-start
    sl-option value="bottom-end" bottom-end
    sl-option value="right" right
    sl-option value="right-start" right-start
    sl-option value="right-end" right-end
    sl-option value="left" left
    sl-option value="left-start" left-start
    sl-option value="left-end" left-end

css:
  .popup-placement span[slot=anchor] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-placement .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-placement sl-select {
    max-width: 280px;
  }

javascript:
  const container = document.querySelector(.popup-placement);
  const popup = container.querySelector(sl-popup);
  const select = container.querySelector(sl-select);

  select.addEventListener(sl-change, () => (popup.placement = select.value));

import { useState } from 'react';
import SlPopup from '@teamshares/shoelace/dist/react/popup';
import SlSelect from '@teamshares/shoelace/dist/react/select';
import SlMenuItem from '@teamshares/shoelace/dist/react/menu-item';

const css = `
  .popup-placement span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-placement .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-placement sl-select {
    max-width: 280px;
  }
`;

const App = () => {
  const [placement, setPlacement] = useState('top');

  return (
    <div className="popup-active">
      <div className="popup-placement">
        <SlPopup placement={placement} active>
          <span slot="anchor" />
          <div className="box" />
        </SlPopup>

        <SlSelect label="Placement" value={placement} onSlChange={event => setPlacement(event.target.value)}>
          <SlMenuItem value="top">top</SlMenuItem>
          <SlMenuItem value="top-start">top-start</SlMenuItem>
          <SlMenuItem value="top-end">top-end</SlMenuItem>
          <SlMenuItem value="bottom">bottom</SlMenuItem>
          <SlMenuItem value="bottom-start">bottom-start</SlMenuItem>
          <SlMenuItem value="bottom-end">bottom-end</SlMenuItem>
          <SlMenuItem value="right">right</SlMenuItem>
          <SlMenuItem value="right-start">right-start</SlMenuItem>
          <SlMenuItem value="right-end">right-end</SlMenuItem>
          <SlMenuItem value="left">left</SlMenuItem>
          <SlMenuItem value="left-start">left-start</SlMenuItem>
          <SlMenuItem value="left-end">left-end</SlMenuItem>
        </SlSelect>
      </div>

      <style>{css}</style>
    </div>
  );
};

Distance

Use the distance attribute to change the distance between the popup and its anchor. A positive value will move the popup further away and a negative value will move it closer.

<div class="popup-distance">
  <sl-popup placement="top" distance="0" active>
    <span slot="anchor"></span>
    <div class="box"></div>
  </sl-popup>

  <sl-range min="-50" max="50" step="1" value="0" label="Distance"></sl-range>
</div>

<style>
  .popup-distance span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-distance .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-distance sl-range {
    max-width: 260px;
  }
</style>

<script>
  const container = document.querySelector('.popup-distance');
  const popup = container.querySelector('sl-popup');
  const distance = container.querySelector('sl-range');

  distance.addEventListener('sl-input', () => (popup.distance = distance.value));
</script>

div.popup-distance
  sl-popup placement="top" distance="0" active="true"
    span slot="anchor"
    div.box
  sl-range min="-50" max="50" step="1" value="0" label="Distance"

css:
  .popup-distance span[slot=anchor] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-distance .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-distance sl-range {
    max-width: 260px;
  }

javascript:
  const container = document.querySelector(.popup-distance);
  const popup = container.querySelector(sl-popup);
  const distance = container.querySelector(sl-range);

  distance.addEventListener(sl-input, () => (popup.distance = distance.value));

import { useState } from 'react';
import SlPopup from '@teamshares/shoelace/dist/react/popup';
import SlRange from '@teamshares/shoelace/dist/react/range';

const css = `
  .popup-distance span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-distance .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-distance sl-range {
    max-width: 260px;
  }
`;

const App = () => {
  const [distance, setDistance] = useState(0);

  return (
    <>
      <div className="popup-distance">
        <SlPopup placement="top" distance={distance} active>
          <span slot="anchor" />
          <div class="box" />
        </SlPopup>

        <SlRange
          label="Distance"
          min="-50"
          max="50"
          step="1"
          value={distance}
          onSlChange={event => setDistance(event.target.value)}
        />
      </div>

      <style>{css}</style>
    </>
  );
};

Skidding

The skidding attribute is similar to distance, but instead allows you to offset the popup along the anchor’s axis. Both positive and negative values are allowed.

<div class="popup-skidding">
  <sl-popup placement="top" skidding="0" active>
    <span slot="anchor"></span>
    <div class="box"></div>
  </sl-popup>

  <sl-range min="-50" max="50" step="1" value="0" label="Skidding"></sl-range>
</div>

<style>
  .popup-skidding span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-skidding .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-skidding sl-range {
    max-width: 260px;
  }
</style>

<script>
  const container = document.querySelector('.popup-skidding');
  const popup = container.querySelector('sl-popup');
  const skidding = container.querySelector('sl-range');

  skidding.addEventListener('sl-input', () => (popup.skidding = skidding.value));
</script>

div.popup-skidding
  sl-popup placement="top" skidding="0" active="true"
    span slot="anchor"
    div.box
  sl-range min="-50" max="50" step="1" value="0" label="Skidding"

css:
  .popup-skidding span[slot=anchor] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-skidding .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-skidding sl-range {
    max-width: 260px;
  }

javascript:
  const container = document.querySelector(.popup-skidding);
  const popup = container.querySelector(sl-popup);
  const skidding = container.querySelector(sl-range);

  skidding.addEventListener(sl-input, () => (popup.skidding = skidding.value));

import { useState } from 'react';
import SlPopup from '@teamshares/shoelace/dist/react/popup';
import SlRange from '@teamshares/shoelace/dist/react/range';

const css = `
  .popup-skidding span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-skidding .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-skidding sl-range {
    max-width: 260px;
  }
`;

const App = () => {
  const [skidding, setSkidding] = useState(0);

  return (
    <>
      <div className="popup-skidding">
        <SlPopup placement="top" skidding={skidding} active>
          <span slot="anchor"></span>
          <div className="box"></div>
        </SlPopup>

        <SlRange
          label="Skidding"
          min="-50"
          max="50"
          step="1"
          value={skidding}
          onSlChange={event => setSkidding(event.target.value)}
        />
      </div>

      <style>{css}</style>
    </>
  );
};

Arrows

Add an arrow to your popup with the arrow attribute. It’s usually a good idea to set a distance to make room for the arrow. To adjust the arrow’s color and size, use the --arrow-color and --arrow-size custom properties, respectively. You can also target the arrow part to add additional styles such as shadows and borders.

By default, the arrow will be aligned as close to the center of the anchor as possible, considering available space and arrow-padding. You can use the arrow-placement attribute to force the arrow to align to the start, end, or center of the popup instead.

<div class="popup-arrow">
  <sl-popup placement="top" arrow arrow-placement="anchor" distance="8" active>
    <span slot="anchor"></span>
    <div class="box"></div>
  </sl-popup>

  <div class="popup-arrow-options">
    <sl-select label="Placement" name="placement" value="top" class="popup-overview-select">
      <sl-option value="top">top</sl-option>
      <sl-option value="top-start">top-start</sl-option>
      <sl-option value="top-end">top-end</sl-option>
      <sl-option value="bottom">bottom</sl-option>
      <sl-option value="bottom-start">bottom-start</sl-option>
      <sl-option value="bottom-end">bottom-end</sl-option>
      <sl-option value="right">right</sl-option>
      <sl-option value="right-start">right-start</sl-option>
      <sl-option value="right-end">right-end</sl-option>
      <sl-option value="left">left</sl-option>
      <sl-option value="left-start">left-start</sl-option>
      <sl-option value="left-end">left-end</sl-option>
    </sl-select>

    <sl-select label="Arrow Placement" name="arrow-placement" value="anchor">
      <sl-option value="anchor">anchor</sl-option>
      <sl-option value="start">start</sl-option>
      <sl-option value="end">end</sl-option>
      <sl-option value="center">center</sl-option>
    </sl-select>
  </div>

  <div class="popup-arrow-options">
    <sl-switch name="arrow" checked>Arrow</sl-switch>
  </div>

  <style>
    .popup-arrow sl-popup {
      --arrow-color: var(--sl-color-primary-600);
    }

    .popup-arrow span[slot='anchor'] {
      display: inline-block;
      width: 150px;
      height: 150px;
      border: dashed 2px var(--sl-color-neutral-600);
      margin: 50px;
    }

    .popup-arrow .box {
      width: 100px;
      height: 50px;
      background: var(--sl-color-primary-600);
      border-radius: var(--sl-border-radius-medium);
    }

    .popup-arrow-options {
      display: flex;
      flex-wrap: wrap;
      align-items: end;
      gap: 1rem;
    }

    .popup-arrow-options sl-select {
      width: 160px;
    }

    .popup-arrow-options + .popup-arrow-options {
      margin-top: 1rem;
    }
  </style>

  <script>
    const container = document.querySelector('.popup-arrow');
    const popup = container.querySelector('sl-popup');
    const placement = container.querySelector('[name="placement"]');
    const arrowPlacement = container.querySelector('[name="arrow-placement"]');
    const arrow = container.querySelector('[name="arrow"]');

    placement.addEventListener('sl-change', () => (popup.placement = placement.value));
    arrowPlacement.addEventListener('sl-change', () => (popup.arrowPlacement = arrowPlacement.value));
    arrow.addEventListener('sl-change', () => (popup.arrow = arrow.checked));
  </script>
</div>

div.popup-arrow
  sl-popup placement="top" arrow="true" arrow-placement="anchor" distance="8" active="true"
    span slot="anchor"
    div.box
  div.popup-arrow-options
    sl-select.popup-overview-select label="Placement" name="placement" value="top"
      sl-option value="top" top
      sl-option value="top-start" top-start
      sl-option value="top-end" top-end
      sl-option value="bottom" bottom
      sl-option value="bottom-start" bottom-start
      sl-option value="bottom-end" bottom-end
      sl-option value="right" right
      sl-option value="right-start" right-start
      sl-option value="right-end" right-end
      sl-option value="left" left
      sl-option value="left-start" left-start
      sl-option value="left-end" left-end
    sl-select label="Arrow Placement" name="arrow-placement" value="anchor"
      sl-option value="anchor" anchor
      sl-option value="start" start
      sl-option value="end" end
      sl-option value="center" center
  div.popup-arrow-options
    sl-switch name="arrow" checked="true" Arrow

  css:
    .popup-arrow sl-popup {
      --arrow-color: var(--sl-color-primary-600);
    }

    .popup-arrow span[slot=anchor] {
      display: inline-block;
      width: 150px;
      height: 150px;
      border: dashed 2px var(--sl-color-neutral-600);
      margin: 50px;
    }

    .popup-arrow .box {
      width: 100px;
      height: 50px;
      background: var(--sl-color-primary-600);
      border-radius: var(--sl-border-radius-medium);
    }

    .popup-arrow-options {
      display: flex;
      flex-wrap: wrap;
      align-items: end;
      gap: 1rem;
    }

    .popup-arrow-options sl-select {
      width: 160px;
    }

    .popup-arrow-options + .popup-arrow-options {
      margin-top: 1rem;
    }

  javascript:
    const container = document.querySelector(.popup-arrow);
    const popup = container.querySelector(sl-popup);
    const placement = container.querySelector([name=placement]);
    const arrowPlacement = container.querySelector([name=arrow-placement]);
    const arrow = container.querySelector([name=arrow]);

    placement.addEventListener(sl-change, () => (popup.placement = placement.value));
    arrowPlacement.addEventListener(sl-change, () => (popup.arrowPlacement = arrowPlacement.value));
    arrow.addEventListener(sl-change, () => (popup.arrow = arrow.checked));

import { useState } from 'react';
import SlPopup from '@teamshares/shoelace/dist/react/popup';
import SlSelect from '@teamshares/shoelace/dist/react/select';
import SlMenuItem from '@teamshares/shoelace/dist/react/menu-item';
import SlSwitch from '@teamshares/shoelace/dist/react/switch';

const css = `
  .popup-arrow sl-popup {
    --arrow-color: var(--sl-color-primary-600);
  }

  .popup-arrow span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-arrow .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-arrow-options {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: 1rem;
  }

  .popup-arrow-options sl-select {
    width: 160px;
  }

  .popup-arrow-options + .popup-arrow-options {
    margin-top: 1rem;
  }
`;

const App = () => {
  const [placement, setPlacement] = useState('top');
  const [arrowPlacement, setArrowPlacement] = useState('anchor');
  const [arrow, setArrow] = useState(true);

  return (
    <>
      <div className="popup-arrow">
        <SlPopup placement={placement} arrow={arrow || null} arrow-placement={arrowPlacement} distance="8" active>
          <span slot="anchor" />
          <div className="box" />
        </SlPopup>

        <div className="popup-arrow-options">
          <SlSelect
            label="Placement"
            name="placement"
            value={placement}
            className="popup-overview-select"
            onSlChange={event => setPlacement(event.target.value)}
          >
            <SlMenuItem value="top">top</SlMenuItem>
            <SlMenuItem value="top-start">top-start</SlMenuItem>
            <SlMenuItem value="top-end">top-end</SlMenuItem>
            <SlMenuItem value="bottom">bottom</SlMenuItem>
            <SlMenuItem value="bottom-start">bottom-start</SlMenuItem>
            <SlMenuItem value="bottom-end">bottom-end</SlMenuItem>
            <SlMenuItem value="right">right</SlMenuItem>
            <SlMenuItem value="right-start">right-start</SlMenuItem>
            <SlMenuItem value="right-end">right-end</SlMenuItem>
            <SlMenuItem value="left">left</SlMenuItem>
            <SlMenuItem value="left-start">left-start</SlMenuItem>
            <SlMenuItem value="left-end">left-end</SlMenuItem>
          </SlSelect>

          <SlSelect
            label="Arrow Placement"
            name="arrow-placement"
            value={arrowPlacement}
            onSlChange={event => setArrowPlacement(event.target.value)}
          >
            <SlMenuItem value="anchor">anchor</SlMenuItem>
            <SlMenuItem value="start">start</SlMenuItem>
            <SlMenuItem value="end">end</SlMenuItem>
            <SlMenuItem value="center">center</SlMenuItem>
          </SlSelect>
        </div>

        <div className="popup-arrow-options">
          <SlSwitch name="arrow" checked={arrow} onSlChange={event => setArrow(event.target.checked)}>
            Arrow
          </SlSwitch>
        </div>
      </div>

      <style>{css}</style>
    </>
  );
};

Syncing with the Anchor’s Dimensions

Use the sync attribute to make the popup the same width or height as the anchor element. This is useful for controls that need the popup to stay the same width or height as the trigger.

<div class="popup-sync">
  <sl-popup placement="top" sync="width" active>
    <span slot="anchor"></span>
    <div class="box"></div>
  </sl-popup>

  <sl-select value="width" label="Sync">
    <sl-option value="width">Width</sl-option>
    <sl-option value="height">Height</sl-option>
    <sl-option value="both">Both</sl-option>
    <sl-option value="">None</sl-option>
  </sl-select>
</div>

<style>
  .popup-sync span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-sync .box {
    width: 100%;
    height: 100%;
    min-width: 50px;
    min-height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-sync sl-select {
    width: 160px;
  }
</style>

<script>
  const container = document.querySelector('.popup-sync');
  const popup = container.querySelector('sl-popup');
  const fixed = container.querySelector('sl-switch');
  const sync = container.querySelector('sl-select');

  sync.addEventListener('sl-change', () => (popup.sync = sync.value));
</script>

div.popup-sync
  sl-popup placement="top" sync="width" active="true"
    span slot="anchor"
    div.box
  sl-select value="width" label="Sync"
    sl-option value="width" Width
    sl-option value="height" Height
    sl-option value="both" Both
    sl-option value="" None

css:
  .popup-sync span[slot=anchor] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-sync .box {
    width: 100%;
    height: 100%;
    min-width: 50px;
    min-height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-sync sl-select {
    width: 160px;
  }

javascript:
  const container = document.querySelector(.popup-sync);
  const popup = container.querySelector(sl-popup);
  const fixed = container.querySelector(sl-switch);
  const sync = container.querySelector(sl-select);

  sync.addEventListener(sl-change, () => (popup.sync = sync.value));

import { useState } from 'react';
import SlPopup from '@teamshares/shoelace/dist/react/popup';
import SlSelect from '@teamshares/shoelace/dist/react/select';
import SlMenuItem from '@teamshares/shoelace/dist/react/menu-item';

const css = `
  .popup-sync span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 50px;
  }

  .popup-sync .box {
    width: 100%;
    height: 100%;
    min-width: 50px;
    min-height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-sync sl-switch {
    margin-top: 1rem;
  }
`;

const App = () => {
  const [sync, setSync] = useState('width');

  return (
    <>
      <div class="popup-sync">
        <SlPopup placement="top" sync={sync} active>
          <span slot="anchor" />
          <div class="box" />
        </SlPopup>

        <SlSelect value={sync} label="Sync" onSlChange={event => setSync(event.target.value)}>
          <SlMenuItem value="width">Width</SlMenuItem>
          <SlMenuItem value="height">Height</SlMenuItem>
          <SlMenuItem value="both">Both</SlMenuItem>
          <SlMenuItem value="">None</SlMenuItem>
        </SlSelect>
      </div>

      <style>{css}</style>
    </>
  );
};

Positioning Strategy

By default, the popup is positioned using an absolute positioning strategy. However, if your anchor is fixed or exists within a container that has overflow: auto|hidden, the popup risks being clipped. To work around this, you can use a fixed positioning strategy by setting the strategy attribute to fixed.

The fixed positioning strategy reduces jumpiness when the anchor is fixed and allows the popup to break out containers that clip. When using this strategy, it’s important to note that the content will be positioned relative to its containing block, which is usually the viewport unless an ancestor uses a transform, perspective, or filter. Refer to this page for more details.

In this example, you can see how the popup breaks out of the overflow container when it’s fixed. The fixed positioning strategy tends to be less performant than absolute, so avoid using it unnecessarily.

Toggle the switch and scroll the container to see the difference.

<div class="popup-strategy">
  <div class="overflow">
    <sl-popup placement="top" strategy="fixed" active>
      <span slot="anchor"></span>
      <div class="box"></div>
    </sl-popup>
  </div>

  <sl-switch checked>Fixed</sl-switch>
</div>

<style>
  .popup-strategy .overflow {
    position: relative;
    height: 300px;
    border: solid 2px var(--sl-color-neutral-200);
    overflow: auto;
  }

  .popup-strategy span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 150px 50px;
  }

  .popup-strategy .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-strategy sl-switch {
    margin-top: 1rem;
  }
</style>

<script>
  const container = document.querySelector('.popup-strategy');
  const popup = container.querySelector('sl-popup');
  const fixed = container.querySelector('sl-switch');

  fixed.addEventListener('sl-change', () => (popup.strategy = fixed.checked ? 'fixed' : 'absolute'));
</script>

div.popup-strategy
  div.overflow
    sl-popup placement="top" strategy="fixed" active="true"
      span slot="anchor"
      div.box
  sl-switch checked="true" Fixed

css:
  .popup-strategy .overflow {
    position: relative;
    height: 300px;
    border: solid 2px var(--sl-color-neutral-200);
    overflow: auto;
  }

  .popup-strategy span[slot=anchor] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 150px 50px;
  }

  .popup-strategy .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-strategy sl-switch {
    margin-top: 1rem;
  }

javascript:
  const container = document.querySelector(.popup-strategy);
  const popup = container.querySelector(sl-popup);
  const fixed = container.querySelector(sl-switch);

  fixed.addEventListener(sl-change, () => (popup.strategy = fixed.checked ? fixed : absolute));

import { useState } from 'react';
import SlPopup from '@teamshares/shoelace/dist/react/popup';
import SlSwitch from '@teamshares/shoelace/dist/react/switch';

const css = `
  .popup-strategy .overflow {
    position: relative;
    height: 300px;
    border: solid 2px var(--sl-color-neutral-200);
    overflow: auto;
  }

  .popup-strategy span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 150px 50px;
  }

  .popup-strategy .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

  .popup-strategy sl-switch {
    margin-top: 1rem;
  }
`;

const App = () => {
  const [fixed, setFixed] = useState(true);

  return (
    <>
      <div className="popup-strategy">
        <div className="overflow">
          <SlPopup placement="top" strategy={fixed ? 'fixed' : 'absolute'} active>
            <span slot="anchor" />
            <div className="box" />
          </SlPopup>
        </div>

        <SlSwitch checked={fixed} onSlChange={event => setFixed(event.target.checked)}>
          Fixed
        </SlSwitch>
      </div>

      <style>{css}</style>
    </>
  );
};

Flip

When the popup doesn’t have enough room in its preferred placement, it can automatically flip to keep it in view. To enable this, use the flip attribute. By default, the popup will flip to the opposite placement, but you can configure preferred fallback placements using flip-fallback-placement and flip-fallback-strategy. Additional options are available to control the flip behavior’s boundary and padding.

Scroll the container to see how the popup flips to prevent clipping.

<div class="popup-flip">
  <div class="overflow">
    <sl-popup placement="top" flip active>
      <span slot="anchor"></span>
      <div class="box"></div>
    </sl-popup>
  </div>

  <br />
  <sl-switch checked>Flip</sl-switch>
</div>

<style>
  .popup-flip .overflow {
    position: relative;
    height: 300px;
    border: solid 2px var(--sl-color-neutral-200);
    overflow: auto;
  }

  .popup-flip span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 150px 50px;
  }

  .popup-flip .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }
</style>

<script>
  const container = document.querySelector('.popup-flip');
  const popup = container.querySelector('sl-popup');
  const flip = container.querySelector('sl-switch');

  flip.addEventListener('sl-change', () => (popup.flip = flip.checked));
</script>

div.popup-flip
  div.overflow
    sl-popup placement="top" flip="true" active="true"
      span slot="anchor"
      div.box
  br
  sl-switch checked="true" Flip

css:
  .popup-flip .overflow {
    position: relative;
    height: 300px;
    border: solid 2px var(--sl-color-neutral-200);
    overflow: auto;
  }

  .popup-flip span[slot=anchor] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 150px 50px;
  }

  .popup-flip .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }

javascript:
  const container = document.querySelector(.popup-flip);
  const popup = container.querySelector(sl-popup);
  const flip = container.querySelector(sl-switch);

  flip.addEventListener(sl-change, () => (popup.flip = flip.checked));

import { useState } from 'react';
import SlPopup from '@teamshares/shoelace/dist/react/popup';
import SlSwitch from '@teamshares/shoelace/dist/react/switch';

const css = `
  .popup-flip .overflow {
    position: relative;
    height: 300px;
    border: solid 2px var(--sl-color-neutral-200);
    overflow: auto;
  }

  .popup-flip span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 150px 50px;
  }

  .popup-flip .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }
`;

const App = () => {
  const [flip, setFlip] = useState(true);

  return (
    <>
      <div className="popup-flip">
        <div className="overflow">
          <SlPopup placement="top" flip={flip} active>
            <span slot="anchor" />
            <div className="box" />
          </SlPopup>
        </div>

        <br />
        <SlSwitch checked={flip} onSlChange={event => setFlip(event.target.checked)}>
          Flip
        </SlSwitch>
      </div>

      <style>{css}</style>
    </>
  );
};

Flip Fallbacks

While using the flip attribute, you can customize the placement of the popup when the preferred placement doesn’t have room. For this, use flip-fallback-placements and flip-fallback-strategy.

If the preferred placement doesn’t have room, the first suitable placement found in flip-fallback-placement will be used. The value of this attribute must be a string including any number of placements separated by a space, e.g. "right bottom".

If no fallback placement works, the final placement will be determined by flip-fallback-strategy. This value can be either initial (default), where the placement reverts to the position in placement, or best-fit, where the placement is chosen based on available space.

Scroll the container to see how the popup changes it’s fallback placement to prevent clipping.

<div class="popup-flip-fallbacks">
  <div class="overflow">
    <sl-popup placement="top" flip flip-fallback-placements="right bottom" flip-fallback-strategy="initial" active>
      <span slot="anchor"></span>
      <div class="box"></div>
    </sl-popup>
  </div>
</div>

<style>
  .popup-flip-fallbacks .overflow {
    position: relative;
    height: 300px;
    border: solid 2px var(--sl-color-neutral-200);
    overflow: auto;
  }

  .popup-flip-fallbacks span[slot='anchor'] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 250px 50px;
  }

  .popup-flip-fallbacks .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }
</style>

div.popup-flip-fallbacks
  div.overflow
    sl-popup placement="top" flip="true" flip-fallback-placements="right bottom" flip-fallback-strategy="initial" active="true"
      span slot="anchor"
      div.box

css:
  .popup-flip-fallbacks .overflow {
    position: relative;
    height: 300px;
    border: solid 2px var(--sl-color-neutral-200);
    overflow: auto;
  }

  .popup-flip-fallbacks span[slot=anchor] {
    display: inline-block;
    width: 150px;
    height: 150px;
    border: dashed 2px var(--sl-color-neutral-600);
    margin: 250px 50px;
  }

  .popup-flip-fallbacks .box {
    width: 100px;
    height: 50px;
    background: var(--sl-color-primary-600);
    border-radius: var(--sl-border-radius-medium);
  }