Rating

Lets users view and set a star rating. Supports half-star precision, keyboard input, and binds to a number through x-model.

Usage

Use a Rating to capture or display a subjective score, such as a product review or a satisfaction level. Keep the scale small and consistent (five stars is the familiar default) and label what is being rated. Set aria-disabled="true" to show an existing average or a score the user cannot change. For choosing one option from a set that is not a score, use Radio instead.

Keyboard Handling

The rating is focusable and behaves like a slider:

• Right / Up - Increase the rating by one step.
• Left / Down - Decrease the rating by one step.
• Home - Clear the rating (set to 0).
• End - Set the maximum rating.

The step is half a star by default, or a whole star when data-precision="full".

A disabled rating keeps its place in the tab order and still announces its score, but none of these keys change it.

Accessibility

The rating is always a focusable role="slider" with aria-valuemin / aria-valuemax / aria-valuenow and a descriptive aria-valuetext (e.g. "3.5 of 5 stars"). Setting aria-disabled="true" stops it accepting input but leaves it in the tab order, so a screen reader user can still reach it and hear the score. The star icons themselves are decorative.

Use aria-disabled for a score the user cannot change, including a display-only average. aria-readonly is not a supported property of the slider role, so browsers do not announce it and the component does not read it.

The rating is named "Rating" by default. Set an aria-label or aria-labelledby describing what is being rated. The name is yours in every state, since the score is announced from aria-valuetext rather than folded into the label.

Both the announced score and the empty state are templates, so they can be translated. See data-value-label and data-aria-empty.

API Reference

Component attribute(s)

x-h-rating

Attributes

Attribute	Values	Required	Description
data-max	number	false	Number of stars (Defaults to 5).
data-precision	half full	false	Smallest selectable increment (Defaults to half).
data-size	sm default lg	false	Size of the stars (Defaults to default).
data-color	string	false	Star color, one of Harmonia's standard colors (e.g. red, green, blue). Defaults to yellow.
data-value	number	false	Initial value when no x-model is bound.
aria-disabled	boolean	false	Locks and dims the rating while keeping it focusable and announced.
data-value-label	string	false	Template for the announced value. {value} and {max} are substituted. Defaults to {value} of {max} stars.
data-aria-empty	string	false	Text announced when the value is 0 (Defaults to "No rating").

Model

Bind a number with x-model. The value updates on selection (click, drag, or keyboard) and is rounded to the configured precision. Clicking the current value again clears the rating to 0. x-model's event modifiers (.lazy, .change, .blur, .enter) are not supported and log an error, the model always updates immediately.

Events

Event	Description
change	Fired when the value changes. The new value is in event.detail.value.

Data Slots

Slot	Element
rating	x-h-rating

Examples

Default (half-star)

<div x-data="{ score: 2.5 }" class="flex items-center gap-3">
  <div x-h-rating x-model="score"></div>
  <span x-text="score"></span>
</div>

Whole stars

<div x-data="{ score: 3 }">
  <div x-h-rating x-model="score" data-precision="full"></div>
</div>

Custom color

<div x-data="{ score: 4 }">
  <div x-h-rating x-model="score" data-color="red"></div>
</div>

Display only

A score the user cannot change, such as an average. It is locked and dimmed, but stays focusable and announces itself as "Average rating, 4.5 of 5 stars".

<div x-h-rating aria-disabled="true" data-value="4.5" data-max="5" aria-label="Average rating"></div>

Translated

data-value-label is a template, so the numbers can go wherever the language needs them.

<div x-data="{ score: 2.5 }">
  <div x-h-rating x-model="score" aria-label="Bewertung" data-value-label="{value} von {max} Sternen" data-aria-empty="Keine Bewertung"></div>
</div>

Larger, ten stars

<div x-data="{ score: 7 }">
  <div x-h-rating x-model="score" data-max="10" data-size="lg"></div>
</div>