Bar Chart

<wa-bar-chart> Stable Since 3.3 Pro Included with Web Awesome Pro

Bar charts compare quantities across categories using rectangular bars. They work well for showing rankings, highlighting differences between groups, and tracking changes across time periods.

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<wa-bar-chart
  id="bar-hero"
  label="Quarterly Revenue"
  description="A bar chart comparing online and in-store revenue across four quarters"
>
</wa-bar-chart>
<script type="module">
  const chart = document.querySelector('#bar-hero');

  chart.config = {
    data: {
      labels: ['Q1', 'Q2', 'Q3', 'Q4'],
      datasets: [
        { label: 'Online', data: [42, 58, 63, 71] },
        { label: 'In-Store', data: [65, 53, 48, 52] },
      ],
    },
  };
</script>

For advanced configuration such as mixed chart types, custom plugins, and direct Chart.js access, see <wa-chart>.

Examples

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Providing Data with JavaScript

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For dynamic data, set the config property directly. The chart will re-render automatically.

<wa-bar-chart id="bar-js-example" label="Survey Results" description="A bar chart of survey results by category">
</wa-bar-chart>
<script type="module">
  const chart = document.querySelector('#bar-js-example');

  chart.config = {
    data: {
      labels: ['Excellent', 'Good', 'Average', 'Poor'],
      datasets: [
        {
          label: 'Responses',
          data: [45, 30, 18, 7],
        },
      ],
    },
  };
</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

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Place a <script type="application/json"> tag inside the component with your chart data. The type field can be omitted since wa-bar-chart already knows its chart type.

<wa-bar-chart label="Survey Results" description="A bar chart of survey results by category">
  <script type="application/json">
    {
      "data": {
        "labels": ["Excellent", "Good", "Average", "Poor"],
        "datasets": [
          {
            "label": "Responses",
            "data": [45, 30, 18, 7]
          }
        ]
      }
    }
  </script>
</wa-bar-chart>

Multiple Datasets

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Add multiple objects to the datasets array to compare groups side by side.

<wa-bar-chart
  id="bar-multi"
  label="Quarterly Sales by Channel"
  description="A bar chart comparing three sales channels across four quarters"
>
</wa-bar-chart>
<script type="module">
  const chart = document.querySelector('#bar-multi');

  chart.config = {
    data: {
      labels: ['Q1', 'Q2', 'Q3', 'Q4'],
      datasets: [
        { label: 'Online', data: [42, 58, 63, 71] },
        { label: 'In-Store', data: [65, 53, 48, 52] },
        { label: 'Wholesale', data: [28, 32, 35, 40] },
      ],
    },
  };
</script>

Custom Colors

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Override the default color palette using the --fill-color-* and --border-color-* CSS custom properties on the component.

<wa-bar-chart
  id="bar-colors"
  label="Custom Colors"
  description="A bar chart with custom purple and cyan colors"
  style="
    --fill-color-1: color-mix(in srgb, var(--wa-color-purple-60) 50%, transparent);
    --border-color-1: var(--wa-color-purple-60);
    --fill-color-2: color-mix(in srgb, var(--wa-color-cyan-60) 50%, transparent);
    --border-color-2: var(--wa-color-cyan-60);
  "
>
</wa-bar-chart>
<script type="module">
  const chart = document.querySelector('#bar-colors');

  chart.config = {
    data: {
      labels: ['Q1', 'Q2', 'Q3', 'Q4'],
      datasets: [
        { label: 'Product A', data: [42, 58, 63, 71] },
        { label: 'Product B', data: [65, 53, 48, 52] },
      ],
    },
  };
</script>

Horizontal Bars

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Use the orientation="horizontal" attribute to render bars horizontally. This is useful when category labels are long or when you want to emphasize ranking.

<wa-bar-chart
  id="bar-horizontal"
  orientation="horizontal"
  label="Department Satisfaction"
  description="A horizontal bar chart showing satisfaction scores by department"
>
</wa-bar-chart>
<script type="module">
  const chart = document.querySelector('#bar-horizontal');

  chart.config = {
    data: {
      labels: ['Engineering', 'Marketing', 'Sales', 'Design', 'Support'],
      datasets: [
        {
          label: 'Satisfaction Score',
          data: [88, 76, 82, 91, 79],
        },
      ],
    },
  };
</script>

Stacked Bars

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Use the stacked attribute to stack datasets on top of each other. This is helpful for showing how parts contribute to a total.

<wa-bar-chart
  id="bar-stacked"
  stacked
  label="Monthly Expenses"
  description="A stacked bar chart showing expenses broken into categories"
>
</wa-bar-chart>
<script type="module">
  const chart = document.querySelector('#bar-stacked');

  chart.config = {
    data: {
      labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun'],
      datasets: [
        { label: 'Rent', data: [1200, 1200, 1200, 1200, 1200, 1200] },
        { label: 'Utilities', data: [180, 160, 150, 140, 170, 190] },
        { label: 'Groceries', data: [420, 380, 450, 400, 430, 410] },
      ],
    },
  };
</script>

Border Width

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Use the --border-width CSS custom property to control the thickness of bar borders.

<wa-bar-chart
  id="bar-border"
  style="--border-width: 4px"
  label="Thick Borders"
  description="A bar chart with thicker bar borders"
>
</wa-bar-chart>
<script type="module">
  const chart = document.querySelector('#bar-border');

  chart.config = {
    data: {
      labels: ['A', 'B', 'C', 'D'],
      datasets: [
        {
          label: 'Values',
          data: [30, 50, 20, 40],
        },
      ],
    },
  };
</script>

Legend

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Use the legend-position attribute to control where the legend appears. Supported values include top (default), bottom, left, right, start, and end. The start and end values are direction-aware and will flip in RTL layouts. Add without-legend to hide it entirely.

<wa-bar-chart
  id="bar-legend"
  legend-position="bottom"
  label="Legend at Bottom"
  description="A bar chart with the legend positioned at the bottom"
>
</wa-bar-chart>
<script type="module">
  const chart = document.querySelector('#bar-legend');

  chart.config = {
    data: {
      labels: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri'],
      datasets: [
        { label: 'Completed', data: [12, 19, 8, 15, 22] },
        { label: 'Pending', data: [5, 3, 10, 7, 2] },
      ],
    },
  };
</script>

Grid Lines

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Use the grid attribute to control which axes show grid lines. Options are both (default), x, y, and none.

<wa-bar-chart
  id="bar-grid"
  grid="y"
  label="Y-Axis Grid Only"
  description="A bar chart showing only horizontal grid lines"
>
</wa-bar-chart>
<script type="module">
  const chart = document.querySelector('#bar-grid');

  chart.config = {
    data: {
      labels: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri'],
      datasets: [
        {
          label: 'Tasks Completed',
          data: [12, 19, 8, 15, 22],
        },
      ],
    },
  };
</script>

Axis Labels

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Use the x-label and y-label attributes to add descriptive labels to each axis.

<wa-bar-chart
  id="bar-axis"
  x-label="Product"
  y-label="Units Sold"
  label="Product Sales"
  description="A bar chart with labeled axes showing units sold per product"
>
</wa-bar-chart>
<script type="module">
  const chart = document.querySelector('#bar-axis');

  chart.config = {
    data: {
      labels: ['Widget', 'Gadget', 'Gizmo', 'Doohickey'],
      datasets: [
        {
          label: 'Units Sold',
          data: [340, 220, 180, 95],
        },
      ],
    },
  };
</script>

Axis Range

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Use the min and max attributes to constrain the value axis.

<wa-bar-chart
  id="bar-range"
  min="0"
  max="100"
  label="Test Scores"
  description="A bar chart with a constrained y-axis from 0 to 100"
>
</wa-bar-chart>
<script type="module">
  const chart = document.querySelector('#bar-range');

  chart.config = {
    data: {
      labels: ['Alice', 'Bob', 'Carol', 'Dave'],
      datasets: [
        {
          label: 'Score',
          data: [82, 91, 76, 88],
        },
      ],
    },
  };
</script>

Disabling Tooltips

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Use the without-tooltip attribute to hide the tooltips that appear when hovering over data points.

<wa-bar-chart id="bar-tooltip" without-tooltip label="No Tooltips" description="A bar chart with tooltips disabled">
</wa-bar-chart>
<script type="module">
  const chart = document.querySelector('#bar-tooltip');

  chart.config = {
    data: {
      labels: ['A', 'B', 'C', 'D'],
      datasets: [
        {
          label: 'Values',
          data: [30, 50, 20, 40],
        },
      ],
    },
  };
</script>

Disabling Animations

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Use the without-animation attribute to disable chart transitions.

<wa-bar-chart id="bar-anim" without-animation label="No Animation" description="A bar chart with animation disabled">
</wa-bar-chart>
<script type="module">
  const chart = document.querySelector('#bar-anim');

  chart.config = {
    data: {
      labels: ['A', 'B', 'C', 'D'],
      datasets: [
        {
          label: 'Values',
          data: [30, 50, 20, 40],
        },
      ],
    },
  };
</script>

Importing

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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.

CDN npm Self-Hosted React

Import this component directly from the CDN:

import 'https://ka-f.webawesome.com/[email protected]/components/bar-chart/bar-chart.js';

After installing Web Awesome via npm, import this component:

import '@awesome.me/webawesome/dist/components/bar-chart/bar-chart.js';

If you're self-hosting Web Awesome, import this component from your server:

import './webawesome/dist/components/bar-chart/bar-chart.js';

To import this component for React 18 or below, use the following code:

import WaBarChart from '@awesome.me/webawesome/dist/react/bar-chart/index.js';

Slots

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Learn more about using slots.

Attributes & Properties

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Learn more about attributes and properties.

CSS custom properties

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Learn more about CSS custom properties.

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