---
title: Popover
description: >-
  The popover component displays contextual content in an overlay triggered by a
  button using the
  [`commandFor`](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/button#commandfor)
  attribute. Use for secondary actions, settings, or information that doesn't
  require a full modal.


  For interactions that need more space or user focus, such as confirmations or
  complex forms, use
  [modal](/docs/api/checkout-ui-extensions/2026-01/polaris-web-components/overlays/modal)
  instead.
api_version: 2026-01
api_name: checkout-ui-extensions
source_url:
  html: >-
    https://shopify.dev/docs/api/checkout-ui-extensions/latest/polaris-web-components/overlays/popover
  md: >-
    https://shopify.dev/docs/api/checkout-ui-extensions/latest/polaris-web-components/overlays/popover.md
---

# Popover

The popover component displays contextual content in an overlay triggered by a button using the [`commandFor`](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/button#commandfor) attribute. Use for secondary actions, settings, or information that doesn't require a full modal.

For interactions that need more space or user focus, such as confirmations or complex forms, use [modal](https://shopify.dev/docs/api/checkout-ui-extensions/2026-01/polaris-web-components/overlays/modal) instead.

## Properties

* **blockSize**

  **SizeUnitsOrAuto**

  **Default: 'auto'**

  Adjust the block size.

* **id**

  **string**

  A unique identifier for the element.

* **inlineSize**

  **SizeUnitsOrAuto**

  **Default: 'auto'**

  Adjust the inline size.

* **maxBlockSize**

  **SizeUnitsOrNone**

  **Default: 'none'**

  Adjust the maximum block size.

* **maxInlineSize**

  **SizeUnitsOrNone**

  **Default: 'none'**

  Adjust the maximum inline size.

* **minBlockSize**

  **SizeUnits**

  **Default: '0'**

  Adjust the minimum block size.

* **minInlineSize**

  **SizeUnits**

  **Default: '0'**

  Adjust the minimum inline size.

### SizeUnitsOrAuto

```ts
SizeUnits | "auto"
```

### SizeUnits

```ts
`${number}px` | `${number}%` | `0`
```

### SizeUnitsOrNone

```ts
SizeUnits | "none"
```

## Events

Learn more about [registering events](https://shopify.dev/docs/api/checkout-ui-extensions/2026-01/using-polaris-components#event-handling).

* **hide**

  **CallbackEventListener\<typeof tagName>**

  Callback fired after the overlay is hidden.

* **show**

  **CallbackEventListener\<typeof tagName>**

  Callback fired after the overlay is shown.

### CallbackEventListener

```ts
(EventListener & {
    (event: CallbackEvent<TTagName, Event> & TData): void;
}) | null
```

### CallbackEvent

```ts
TEvent & {
    currentTarget: HTMLElementTagNameMap[TTagName];
}
```

Examples

## Preview

![](https://cdn.shopify.com/shopifycloud/shopify-dev/development/assets/assets/images/templated-apis-screenshots/checkout-ui-extensions/2025-10/popover-default-DRjK8EYm.png)

### Examples

* #### Code

  ##### Default

  ```html
  <s-button commandFor="popover-veteran-id">Open Popover</s-button>
  <s-popover id="popover-veteran-id">
    <s-stack gap="base" padding="base" direction="inline">
      <s-text-field label="Veteran ID"></s-text-field>
      <s-button variant="primary">Validate</s-button>
    </s-stack>
  </s-popover>
  ```