Line Chart

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

Line charts show trends over time by connecting data points with line segments. Use them when the x-axis represents a sequential dimension and you want to emphasize the shape and direction of the data.

Get Line Chart with Web Awesome Pro! Subscribing to Web Awesome Pro gives you every Pro component, plus premium themes, color tools, team collaboration, and more. 
<wa-line-chart id="line-hero" label="Monthly Visitors" description="A line chart showing website visitors over seven months">
</wa-line-chart>
<script type="module">
  const chart = document.querySelector('#line-hero');

  chart.config = {
    data: {
      labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
      datasets: [{
        label: 'Visitors',
        data: [4200, 4800, 5100, 4900, 5500, 6200, 5800]
      }]
    }
  };
</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-line-chart id="line-js-example" label="Weekly Signups" description="A line chart showing new user signups over one week">
</wa-line-chart>
<script type="module">
  const chart = document.querySelector('#line-js-example');

  chart.config = {
    data: {
      labels: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
      datasets: [{
        label: 'Signups',
        data: [120, 95, 140, 160, 130, 80, 65]
      }]
    }
  };
</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-line-chart already knows its chart type.

<wa-line-chart label="Weekly Signups" description="A line chart showing new user signups over one week">
  <script type="application/json">
    {
      "data": {
        "labels": ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"],
        "datasets": [{
          "label": "Signups",
          "data": [120, 95, 140, 160, 130, 80, 65]
        }]
      }
    }
  </script>
</wa-line-chart>

Multiple Lines

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Add multiple datasets to compare trends across different series.

<wa-line-chart id="line-multi" label="Traffic by Source" description="A line chart comparing website traffic from three different sources">
</wa-line-chart>
<script type="module">
  const chart = document.querySelector('#line-multi');

  chart.config = {
    data: {
      labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun'],
      datasets: [
        { label: 'Organic', data: [2200, 2800, 3100, 2900, 3500, 4200] },
        { label: 'Paid', data: [1800, 2100, 1900, 2400, 2200, 2600] },
        { label: 'Social', data: [800, 950, 1100, 1300, 1200, 1500] }
      ]
    }
  };
</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-line-chart
  id="line-colors"
  label="Custom Colors"
  description="A line chart with custom purple and orange line colors"
  style="
    --fill-color-1: var(--wa-color-purple-60);
    --border-color-1: var(--wa-color-purple-60);
    --fill-color-2: var(--wa-color-orange-60);
    --border-color-2: var(--wa-color-orange-60);
  "
>
</wa-line-chart>
<script type="module">
  const chart = document.querySelector('#line-colors');

  chart.config = {
    data: {
      labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun'],
      datasets: [
        { label: 'Revenue', data: [12, 19, 15, 25, 22, 30] },
        { label: 'Expenses', data: [8, 12, 10, 15, 14, 18] }
      ]
    }
  };
</script>

Fill Area

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Set fill to true on a dataset to fill the area beneath the line. This works well for emphasizing volume or magnitude.

<wa-line-chart id="line-fill-example" label="Cumulative Signups" description="A line chart with a filled area showing cumulative signups">
</wa-line-chart>
<script type="module">
  const chart = document.querySelector('#line-fill-example');

  chart.config = {
    data: {
      labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun'],
      datasets: [{
        label: 'Cumulative Signups',
        data: [500, 1200, 2100, 3400, 4800, 6500],
        fill: true
      }]
    }
  };
</script>

Stacked Area

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Combine the stacked attribute with fill: true on each dataset to create a stacked area chart.

<wa-line-chart id="line-stacked-example" stacked label="Traffic by Source" description="A stacked area chart showing traffic by source over time">
</wa-line-chart>
<script type="module">
  const chart = document.querySelector('#line-stacked-example');

  chart.config = {
    data: {
      labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun'],
      datasets: [
        {
          label: 'Organic',
          data: [2200, 2800, 3100, 2900, 3500, 4200],
          fill: true
        },
        {
          label: 'Paid',
          data: [1800, 2100, 1900, 2400, 2200, 2600],
          fill: true
        },
        {
          label: 'Social',
          data: [800, 950, 1100, 1300, 1200, 1500],
          fill: true
        }
      ]
    }
  };
</script>

Border Width

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Use the --line-border-width CSS custom property to control the thickness of the lines.

<wa-line-chart id="line-border" style="--line-border-width: 5px" label="Thick Lines" description="A line chart with thicker lines">
</wa-line-chart>
<script type="module">
  const chart = document.querySelector('#line-border');

  chart.config = {
    data: {
      labels: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri'],
      datasets: [{
        label: 'Response Time (ms)',
        data: [45, 52, 48, 55, 50]
      }]
    }
  };
</script>

Point Radius

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Use the --point-radius CSS custom property to control the size of the dots drawn at each data point. Set it to 0 to hide points entirely.

<wa-line-chart id="line-points" style="--point-radius: 6px" label="Large Points" description="A line chart with larger data point dots">
</wa-line-chart>
<script type="module">
  const chart = document.querySelector('#line-points');

  chart.config = {
    data: {
      labels: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri'],
      datasets: [{
        label: 'Response Time (ms)',
        data: [45, 52, 48, 55, 50]
      }]
    }
  };
</script>

Legend

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Use the legend-position attribute to control where the legend appears. Add without-legend to hide it entirely.

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

  chart.config = {
    data: {
      labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun'],
      datasets: [
        { label: 'Page Views', data: [1200, 1350, 1280, 1420, 1580, 1650] },
        { label: 'Unique Visitors', data: [800, 920, 870, 980, 1050, 1120] }
      ]
    }
  };
</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-line-chart id="line-grid" grid="x" label="X-Axis Grid Only" description="A line chart showing only vertical grid lines">
</wa-line-chart>
<script type="module">
  const chart = document.querySelector('#line-grid');

  chart.config = {
    data: {
      labels: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri'],
      datasets: [{
        label: 'Orders',
        data: [42, 58, 35, 61, 48]
      }]
    }
  };
</script>

Axis Labels

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

<wa-line-chart id="line-axis" x-label="Month" y-label="Visitors" label="Monthly Traffic" description="A line chart with labeled axes showing monthly visitors">
</wa-line-chart>
<script type="module">
  const chart = document.querySelector('#line-axis');

  chart.config = {
    data: {
      labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun'],
      datasets: [{
        label: 'Visitors',
        data: [4200, 4800, 5100, 4900, 5500, 6200]
      }]
    }
  };
</script>

Axis Range

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

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

  chart.config = {
    data: {
      labels: ['Week 1', 'Week 2', 'Week 3', 'Week 4', 'Week 5'],
      datasets: [{
        label: 'Completion Rate (%)',
        data: [62, 71, 68, 85, 78]
      }]
    }
  };
</script>

Disabling Tooltips

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

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

  chart.config = {
    data: {
      labels: ['A', 'B', 'C', 'D', 'E'],
      datasets: [{
        label: 'Values',
        data: [10, 40, 20, 50, 30]
      }]
    }
  };
</script>

Disabling Animations

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Use the without-animation attribute to disable chart transitions.

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

  chart.config = {
    data: {
      labels: ['A', 'B', 'C', 'D', 'E'],
      datasets: [{
        label: 'Values',
        data: [10, 40, 20, 50, 30]
      }]
    }
  };
</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/line-chart/line-chart.js';

After installing Web Awesome via npm, import this component:

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

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

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

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

import WaLineChart from '@awesome.me/webawesome/dist/react/line-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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