Pie Chart
<wa-pie-chart>
Pie charts show the proportional composition of a whole as slices of a circle. They work best with a small number of categories where the relative proportions matter more than exact values.
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For a variation with a hollow center, see Doughnut Chart.
<wa-pie-chart id="pie-hero" label="Browser Market Share" description="A pie chart showing browser market share with Chrome leading at 65%"> </wa-pie-chart> <script type="module"> const chart = document.querySelector('#pie-hero'); chart.config = { data: { labels: ['Chrome', 'Safari', 'Firefox', 'Edge', 'Other'], datasets: [{ label: 'Market Share', data: [65, 18, 8, 5, 4] }] } }; </script>
For advanced configuration such as custom plugins and direct Chart.js access, see <wa-chart>.
Examples
Providing Data with JavaScript
For dynamic data, set the config property directly. The chart will re-render automatically.
<wa-pie-chart id="pie-js-example" label="Budget Allocation" description="A pie chart of budget allocation"> </wa-pie-chart> <script type="module"> const chart = document.querySelector('#pie-js-example'); chart.config = { data: { labels: ['Engineering', 'Marketing', 'Sales', 'Operations'], datasets: [{ label: 'Budget', data: [40, 25, 20, 15] }] } }; </script>
Note that config is shallowly reactive. If you mutate the existing object in place, you must reassign it to trigger a re-render!
Providing Data with JSON
Place a <script type="application/json"> tag inside the component with your chart data. Each value in the data array corresponds to a label.
<wa-pie-chart label="Budget Allocation" description="A pie chart showing how a budget is allocated across departments"> <script type="application/json"> { "data": { "labels": ["Engineering", "Marketing", "Sales", "Operations"], "datasets": [{ "label": "Budget", "data": [40, 25, 20, 15] }] } } </script> </wa-pie-chart>
Custom Slice Colors
Override the default color palette using the --fill-color-* and --border-color-* CSS custom properties to apply custom colors to each slice.
<wa-pie-chart id="pie-colors" label="Custom Colors" description="A pie chart with custom slice colors" style=" --fill-color-1: color-mix(in srgb, var(--wa-color-blue-60) 70%, transparent); --border-color-1: var(--wa-color-blue-60); --fill-color-2: color-mix(in srgb, var(--wa-color-cyan-60) 70%, transparent); --border-color-2: var(--wa-color-cyan-60); --fill-color-3: color-mix(in srgb, var(--wa-color-purple-60) 70%, transparent); --border-color-3: var(--wa-color-purple-60); " > </wa-pie-chart> <script type="module"> const chart = document.querySelector('#pie-colors'); chart.config = { data: { labels: ['Desktop', 'Mobile', 'Tablet'], datasets: [{ label: 'Traffic', data: [55, 35, 10] }] } }; </script>
Legend
Use the legend-position attribute to control where the legend appears. For pie charts, placing the legend on the side can help prevent overlap. Add without-legend to hide it entirely.
<wa-pie-chart id="pie-legend" legend-position="right" label="Legend on Right" description="A pie chart with the legend on the right side"> </wa-pie-chart> <script type="module"> const chart = document.querySelector('#pie-legend'); chart.config = { data: { labels: ['Rent', 'Food', 'Transport', 'Entertainment', 'Savings'], datasets: [{ label: 'Monthly Spending', data: [35, 25, 15, 10, 15] }] } }; </script>
Disabling Tooltips
Use the without-tooltip attribute to hide the tooltips that appear when hovering over slices.
<wa-pie-chart id="pie-tooltip" without-tooltip label="No Tooltips" description="A pie chart with tooltips disabled"> </wa-pie-chart> <script type="module"> const chart = document.querySelector('#pie-tooltip'); chart.config = { data: { labels: ['A', 'B', 'C'], datasets: [{ label: 'Values', data: [40, 35, 25] }] } }; </script>
Disabling Animations
Use the without-animation attribute to disable chart transitions.
<wa-pie-chart id="pie-anim" without-animation label="No Animation" description="A pie chart with animation disabled"> </wa-pie-chart> <script type="module"> const chart = document.querySelector('#pie-anim'); chart.config = { data: { labels: ['A', 'B', 'C'], datasets: [{ label: 'Values', data: [40, 35, 25] }] } }; </script>
Importing
If you're using the autoloader or a hosted project, components load on demand — no manual import needed. To cherry-pick a component manually, use one of the following snippets.
Import this component directly from the CDN:
import 'https://ka-f.webawesome.com/[email protected]/components/pie-chart/pie-chart.js';
After installing Web Awesome via npm, import this component:
import '@awesome.me/webawesome/dist/components/pie-chart/pie-chart.js';
If you're self-hosting Web Awesome, import this component from your server:
import './webawesome/dist/components/pie-chart/pie-chart.js';
To import this component for React 18 or below, use the following code:
import WaPieChart from '@awesome.me/webawesome/dist/react/pie-chart/index.js';
Slots
Learn more about using slots.
| Name | Description |
|---|---|
| (default) | An optional <script type="application/json"> element containing the Chart.js configuration object. |
Attributes & Properties
Learn more about attributes and properties.
| Name | Description | Reflects | |
|---|---|---|---|
config |
The Chart.js configuration object. Setting this property will automatically re-render the chart.
Type
ChartJS['config'] |
||
css |
One or more CSSResultGroup to include in the component's shadow root. Host styles are automatically prepended.
Type
CSSResultGroup | undefinedDefault
[styles] |
||
descriptiondescription |
A description of the chart, used for accessibility.
Type
string | nullDefault
null |
||
gridgrid |
Which axes to show grid lines on.
Type
'x' | 'y' | 'both' | 'none'Default
'both' |
||
indexAxisindex-axis |
The base axis of the dataset. 'x' for vertical bars and 'y' for horizontal bars.
Type
'x' | 'y'Default
'x' |
||
labellabel |
A label for the chart, used for accessibility.
Type
string | nullDefault
null |
||
legendPositionlegend-position |
The position of the legend relative to the chart.
Type
LayoutPosition | 'start' | 'end'Default
'top' |
||
maxmax |
The maximum value for the value axis.
Type
number | nullDefault
null |
||
minmin |
The minimum value for the value axis.
Type
number | nullDefault
null |
||
pluginsplugins |
Additional Chart.js plugins to register for this chart instance.
Type
arrayDefault
[] |
||
stackedstacked |
Stacks datasets on top of each other along the value axis.
Type
booleanDefault
false |
||
typetype |
The type of chart to render. Valid types include
bar, line, pie, doughnut, polarArea, radar, scatter,
and bubble.Type
ChartTypeDefault
'pie' |
||
withoutAnimationwithout-animation |
Disables chart animations
Type
booleanDefault
false |
|
|
withoutLegendwithout-legend |
Hides the legend
Type
booleanDefault
false |
|
|
withoutTooltipwithout-tooltip |
Hides tooltips over data points
Type
booleanDefault
false |
|
|
xLabelxLabel |
A label for the x-axis.
Type
string | nullDefault
null |
||
yLabelyLabel |
A label for the y-axis.
Type
string | nullDefault
null |
CSS custom properties
Learn more about CSS custom properties.
| Name | Description |
|---|---|
--border-color-1 |
Border color for the first dataset.
Default
var(--wa-color-blue-60)
|
--border-color-2 |
Border color for the second dataset.
Default
var(--wa-color-pink-60)
|
--border-color-3 |
Border color for the third dataset.
Default
var(--wa-color-green-60)
|
--border-color-4 |
Border color for the fourth dataset.
Default
var(--wa-color-yellow-60)
|
--border-color-5 |
Border color for the fifth dataset.
Default
var(--wa-color-purple-60)
|
--border-color-6 |
Border color for the sixth dataset.
Default
var(--wa-color-orange-60)
|
--border-radius |
Border radius for bar charts.
Default
var(--wa-border-radius-s)
|
--border-width |
Border width for bars and arcs.
Default
var(--wa-border-width-s)
|
--fill-color-1 |
Fill color for the first dataset.
Default
color-mix(in srgb, var(--wa-color-blue-60) 40%, transparent)
|
--fill-color-2 |
Fill color for the second dataset.
Default
color-mix(in srgb, var(--wa-color-pink-60) 40%, transparent)
|
--fill-color-3 |
Fill color for the third dataset.
Default
color-mix(in srgb, var(--wa-color-green-60) 40%, transparent)
|
--fill-color-4 |
Fill color for the fourth dataset.
Default
color-mix(in srgb, var(--wa-color-yellow-60) 40%, transparent)
|
--fill-color-5 |
Fill color for the fifth dataset.
Default
color-mix(in srgb, var(--wa-color-purple-60) 40%, transparent)
|
--fill-color-6 |
Fill color for the sixth dataset.
Default
color-mix(in srgb, var(--wa-color-orange-60) 40%, transparent)
|
--grid-border-width |
Border width for chart grid lines and axis borders.
Default
var(--wa-border-width-s)
|
--grid-color |
Color of the chart grid lines and axis borders.
Default
var(--wa-color-neutral-border-quiet)
|
--line-border-width |
Border width for line and radar charts.
Default
var(--wa-border-width-m)
|
--point-radius |
Radius of data point dots.
Default
var(--wa-border-width-m)
|