3.0.0-alpha.4 Alpha
Light Dark Light Dark System Search /

Rating

<wa-rating> Since 2.0 stable

Ratings give users a way to quickly view and provide feedback.

<wa-rating label="Rating"></wa-rating>

Examples

Labels

Ratings are commonly identified contextually, so labels aren't displayed. However, you should always provide one for assistive devices using the label attribute.

<wa-rating label="Rate this component"></wa-rating>

Maximum Value

Ratings are 0-5 by default. To change the maximum possible value, use the max attribute.

<wa-rating label="Rating" max="3"></wa-rating>

Precision

Use the precision attribute to let users select fractional ratings.

<wa-rating label="Rating" precision="0.5" value="2.5"></wa-rating>

Symbol Sizes

Set the --symbol-size custom property to adjust the size.

<wa-rating label="Rating" style="--symbol-size: 2rem;"></wa-rating>

Readonly

Use the readonly attribute to display a rating that users can't change.

<wa-rating label="Rating" readonly value="3"></wa-rating>

Disabled

Use the disabled attribute to disable the rating.

<wa-rating label="Rating" disabled value="3"></wa-rating>

Detecting Hover

Use the wa-hover event to detect when the user hovers over (or touch and drag) the rating. This lets you hook into values as the user interacts with the rating, but before they select a value.

The event has a payload with phase and value properties. The phase property tells when hovering starts, moves to a new value, and ends. The value property tells what the rating's value would be if the user were to commit to the hovered value.

<div class="detect-hover">
  <wa-rating label="Rating"></wa-rating>
  <span></span>
</div>

<script>
  const rating = document.querySelector('.detect-hover > wa-rating');
  const span = rating.nextElementSibling;
  const terms = ['No rating', 'Terrible', 'Bad', 'OK', 'Good', 'Excellent'];

  rating.addEventListener('wa-hover', event => {
    span.textContent = terms[event.detail.value];

    // Clear feedback when hovering stops
    if (event.detail.phase === 'end') {
      span.textContent = '';
    }
  });
</script>

<style>
  .detect-hover span {
    position: relative;
    top: -4px;
    left: 8px;
    border-radius: var(--wa-border-radius-s);
    background: var(--wa-color-neutral-fill-loud);
    color: var(--wa-color-neutral-on-loud);
    text-align: center;
    padding: 4px 6px;
  }

  .detect-hover span:empty {
    display: none;
  }
</style>

Custom Icons

You can provide custom icons by passing a function to the getSymbol property.

<wa-rating label="Rating" class="rating-hearts" style="--symbol-color-active: #ff4136;"></wa-rating>

<script type="module">
  const rating = document.querySelector('.rating-hearts');

  await customElements.whenDefined("wa-rating")
  await rating.updateComplete

  rating.getSymbol = () => '<wa-icon name="heart" variant="solid"></wa-icon>';
</script>

Value-based Icons

You can also use the getSymbol property to render different icons based on value.

<wa-rating label="Rating" class="rating-emojis"></wa-rating>

<script type="module">
  const rating = document.querySelector('.rating-emojis');

  await customElements.whenDefined("wa-rating")
  await rating.updateComplete

  rating.getSymbol = value => {
    const icons = ['face-angry', 'face-frown', 'face-meh', 'face-smile', 'face-laugh'];
    return `<wa-icon name="${icons[value - 1]}"></wa-icon>`;
  };
</script>

Properties

Name Description Reflects
label
label
A label that describes the rating to assistive devices.
Type string
Default ''
value
value
The current rating.
Type number
Default 0
max
max
The highest rating to show.
Type number
Default 5
precision
precision
The precision at which the rating will increase and decrease. For example, to allow half-star ratings, set this attribute to 0.5.
Type number
Default 1
readonly
readonly
Makes the rating readonly.
Type boolean
Default false
disabled
disabled
Disables the rating.
Type boolean
Default false
getSymbol
getSymbol
A function that customizes the symbol to be rendered. The first and only argument is the rating's current value. The function should return a string containing trusted HTML of the symbol to render at the specified value. Works well with <wa-icon> elements.
Type (value: number) => string

Methods

Name Description Arguments
focus() Sets focus on the rating. options: FocusOptions
blur() Removes focus from the rating.

Events

Name Description
wa-change Emitted when the rating's value changes.
wa-hover Emitted when the user hovers over a value. The phase property indicates when hovering starts, moves to a new value, or ends. The value property tells what the rating's value would be if the user were to commit to the hovered value.

CSS custom properties

Name Description
--symbol-color
The inactive color for symbols.
--symbol-color-active
The active color for symbols.
--symbol-size
The size of symbols.
--symbol-spacing
The spacing to use around symbols.

CSS parts

Name Description
base The component's base wrapper.

Dependencies

This component automatically imports the following elements. Subdependencies, if any exist, will also be included in this list.

Importing

The autoloader is the recommended way to import components. If you prefer to do it manually, use one of the following code snippets.

CDN npm React

To manually import this component from the CDN, use the following code.

import 'https://early.webawesome.com/webawesome@3.0.0-alpha.4/dist/components/rating/rating.js';
Coming soon! Coming soon!
    No results