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Range Band in JavaScript Sparkline control

30 Mar 2023 / 1 minute to read

This section explains how to customize the sparkline with multiple range bands.

Range band customization

The range band feature is used to highlight a particular range along with the y-axis using the [startRange] and [endRange] properties. You can also customize the [color] and [opacity] of the range band.

Source
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index.ts
index.html
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import { Sparkline } from '@syncfusion/ej2-charts';

let sparkline: Sparkline = new Sparkline({
    height: '150px',
    width: '150px',
    lineWidth: 2,
    fill: '#0d3c9b',
    dataSource:   [0, 6, 4, 1, 3, 2, 5],
    // To configure range band settings
    rangeBandSettings: [
            {
                startRange: 1,
                endRange: 3,
                color: '#bfd4fc',
                opacity:0.4
            }
    ]
});
sparkline.appendTo("#element");
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<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>Essential JS 2 for Sparkline </title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 for Sparkline UI Control" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.1.35/ej2-charts/styles/material.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container' style="margin-top: 15%;">
            <div id="element" align="center" ></div>
    </div>
</body>

</html>

Multiple range band customization

You can define multiple range bands to a sparkline as shown in the following code sample.

Source
Preview
index.ts
index.html
Copied to clipboard
import { Sparkline } from '@syncfusion/ej2-charts';

 let sparkline: Sparkline = new Sparkline({
    height: '150px',
     width: '150px',
     lineWidth: 2,
     fill: '#0d3c9b',
     dataSource:   [0, 6, 4, 1, 3, 2, 5],
     rangeBandSettings: [
             {
                 startRange: 1,
                 endRange: 2,
                 color: '#bfd4fc',
                 opacity:0.4
             },
             {
                 startRange: 4,
                 endRange: 5,
                 color: 'red',
                 opacity:0.4
             }
         ]
 });
sparkline.appendTo("#element");
Copied to clipboard
<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>Essential JS 2 for Sparkline </title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 for Sparkline UI Control" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.1.35/ej2-charts/styles/material.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container' style="margin-top: 15%;">
            <div id="element" align="center" ></div>
    </div>
</body>

</html>
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