Rating

Ratings provide insight regarding others’ opinions and experiences with a product. Users can also rate products they’ve purchased.

Simple ratings

Customized ratings

Here are some examples of customizing the component. You can learn more about this in the overrides documentation page.

Hover feedback

You can display a label on hover to help users pick the correct rating value. The demo uses the onChangeActive prop.

<Rating
  name="hover-feedback"
  value={value}
  precision={0.5}
  onChange={(event, newValue) => {
    setValue(newValue);
  }}
  onChangeActive={(event, newHover) => {
    setHover(newHover);
  }}
  emptyIcon={<StarIcon style={{ opacity: 0.55 }} fontSize="inherit" />}
/>
{value !== null && (
  <Box ml={2}>{labels[hover !== -1 ? hover : value]}</Box>
)}

Half ratings

The rating can display any float number with the value prop. Use the precision prop to define the minimum increment value change allowed.

<Rating name="half-rating" defaultValue={2.5} precision={0.5} />
<Rating
  name="half-rating-read"
  defaultValue={2.5}
  precision={0.5}
  readOnly
/>

Sizes

Fancy larger or smaller ratings? Use the size prop.

<Rating name="size-small" defaultValue={2} size="small" />
<Rating name="size-medium" defaultValue={2} />
<Rating name="size-large" defaultValue={2} size="large" />

Accessibility

(WAI tutorial: https://www.w3.org/WAI/tutorials/forms/custom-controls/#a-star-rating)

The accessibility of this component relies on:

A radio group is used with its fields visually hidden. It contains six radio buttons, one for each star and another for 0 stars, which is checked by default. Make sure you are providing a name prop that is unique to the parent form.
The labels for the radio buttons contain actual text (“1 Star”, “2 Stars”, …), make sure you provide a getLabelText prop when the page language is not English.

By default, the rating component uses both a difference of color and shape between the filled and empty icons to indicate the value.

In the event that you are using color as the only means to indicate the value, the information should also be also displayed as text, as in this demo. This is important to match success Criterion 1.4.1 of WCAG2.1.

<Rating
  name="text-feedback"
  value={value}
  readOnly
  precision={0.5}
  emptyIcon={<StarIcon style={{ opacity: 0.55 }} fontSize="inherit" />}
/>
<Box ml={2}>{labels[value]}</Box>

API

<Rating />