Svelte Star Rating

What is this

A simple svelte component that shows a rating from 0 to 5 with svg stars. Just need to pass a number. No dependencies required.

Installation

As with any other node package in svelte:

npm install svelte-star-rating

But remember to install it as a dev dependency when using it with SvelteKit (or Sapper):

npm install svelte-star-rating --save-dev

Usage

The package exports a svelte component.

The component takes a number of props:

Prop	Type	Default	Required	Description
rating	Number	-	Yes	The rating. Any number from 0 to 5.0
config	Object	{}	No	Config options for the component. See below
style	String	-	No	CSS styles passed directly to the container component

About the config object:

Option	Type	Default	Description
emptyColor	String	'#7f7f7f'	The color for the empty parts of the stars
fullColor	String	'#ffcf00'	The color for the filling of the stars
showText	Boolean	false	Show the rating number next to the stars or not
size	Number	20	The size of the stars. Pass a number of pixels.

About the style prop: It accepts a string of css styles, written as inline-css. It is passed directly, unchecked, to the main div as inline-css. Use it cautiously.

Be aware

• Passing a rating higher than 5.0 or lower than 0.0 will throw an error.
• The component is reactive since v1.3.0 (if rating value changes, the component will change the displayed rating).
• Any css-valid color is accepted (hsl, hex, rgb, string, etc.).
• Stars are 1:1 proportionate (width equals height, so both equal the size property).
• If the rating number text is shown (showText: true), font size is half the star size or 16px, whatever is higher.

Also:

• The component doesn't handle in any way the number passed as rating: If you operate on the number, you may end up with a value of 3.02 + 0.01 = 3.0299999995, for example, due to the way JavaScript works. It's up to you to manage this before passing the number.

Example

Use it as follows:

Simple

<script>
  import StarRating from 'svelte-star-rating';
</script>

<StarRating rating={3.35} />

Output:

Advanced

<script>
  import StarRating from 'svelte-star-rating';
  
  const rating = 3.35;
  const config = {
    emptyColor: 'hsl(240, 80%, 85%)',
    fullColor: '#f05',
    showText: true,
    size: 42,
  };
  const style = 'border: 1px solid firebrick;padding: 12px;';
</script>

<StarRating {rating} {config} {style} />

Output: