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Getting started with JavaScript Sparkline control

19 Oct 2022 / 5 minutes to read

This section explains the steps required to create a sparkline and demonstrate its basic usage.

Dependencies

The following list of minimum dependencies are required to use the sparkline:

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|-- @syncfusion/ej2-charts
    |-- @syncfusion/ej2-base
    |-- @syncfusion/ej2-data
    |-- @syncfusion/ej2-svg-base

Installation and configuration

  • To get started with the sparkline control, clone the Essential JS 2 quickstart project, and then install the necessary packages using the following commands:
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git clone https://github.com/syncfusion/ej2-quickstart.git quickstart
cd quickstart
npm install
  • Map the Sparkline packages in system.config.js configuration file.
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System.config({
paths: {
    'syncfusion:': './node_modules/@syncfusion/',
},
map: {
    app: 'app',

    //Syncfusion packages mapping
    "@syncfusion/ej2-base": "syncfusion:ej2-base/dist/ej2-base.umd.min.js",
    "@syncfusion/ej2-svg-base": "syncfusion:ej2-svg-base/dist/ej2-svg-base.umd.min.js",
    "@syncfusion/ej2-data": "syncfusion:ej2-data/dist/ej2-data.umd.min.js",
    "@syncfusion/ej2-popups": "syncfusion:ej2-popups/dist/ej2-popups.umd.min.js",
    "@syncfusion/ej2-buttons": "syncfusion:ej2-buttons/dist/ej2-buttons.umd.min.js",
    "@syncfusion/ej2-charts": "syncfusion:ej2-charts/dist/ej2-charts.umd.min.js"
},
packages: {
    'app': { main: 'app', defaultExtension: 'js' }
}
});

Add sparkline to project

Add an HTML div element for map into your index.html. [src/index.html]

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<!DOCTYPE html>
<html lang="en">

<head>
<title>EJ2 Sparkline</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="Typescript UI Controls" />
<meta name="author" content="Syncfusion" />
<link href="index.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>
 <!--container which is going to render the Sparkline-->
 <div id='element'>
 </div>
</body>

</html>

Then, import the sparkline control into your index.ts to instantiate a sparkline and append its instance to the #container.

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import { Sparkline } from '@syncfusion/ej2-charts';

// Initialize the sparkline control
let sparkline: Sparkline = new Sparkline();

// Render initialized sparkline
sparkline.appendTo('#element');

Now, use the npm run start command to run the application in browser.

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npm run start
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import { Sparkline } from '@syncfusion/ej2-charts';

let sparkline: Sparkline = new Sparkline();

sparkline.appendTo('#element');

Since the data source has not been specified to the sparkline, no shapes will be rendered. Only an empty SVG element is appended to the sparkline container.

Module injection

The sparkline component is segregated into individual feature-wise modules. To use a particular feature, inject its feature module using the Sparkline.Inject() method. The module available in sparkline and its description is as follows.

  • SparklineTooltip - Inject this provider to use tooltip series.

In the current application, the above basic sparkline is modified to visualize the types of sparkline.

In this application, the tooltip feature of the sparkline is used. Now, import the SparklineTooltip module from the sparkline package, and inject it into the sparkline control using the Sparkline.Inject method.

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import { Sparkline, SparklineTooltip } from '@syncfusion/ej2-charts';
Sparkline.Inject(SparklineTooltip);

Bind data source to sparkline

The [dataSource] property is used for binding data source to the sparkline. This property takes the collection value as input. For example, a list of objects can be provided as input.

Source
Preview
index.ts
index.html
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import { Sparkline } from '@syncfusion/ej2-charts';
let sparkline: Sparkline = new Sparkline({
height: '100px',
width: '70%',
dataSource: [
        { x: 0, xval: '2005', yval: 20090440 },
        { x: 1, xval: '2006', yval: 20264080 },
        { x: 2, xval: '2007', yval: 20434180 },
        { x: 3, xval: '2008', yval: 21007310 },
        { x: 4, xval: '2009', yval: 21262640 },
        { x: 5, xval: '2010', yval: 21515750 },
        { x: 6, xval: '2011', yval: 21766710 },
        { x: 7, xval: '2012', yval: 22015580 },
        { x: 8, xval: '2013', yval: 22262500 },
        { x: 9, xval: '2014', yval: 22507620 },
    ],
// Assign the dataSource values to series of sparkline 'xName and yName'
xName: 'xval', yName: 'yval'
}, '#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/ej2/20.3.47/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>

Change the type of sparkline

You can change the sparkline type by setting the [type] property to [Line], [Column], [WinLoss], [Pie], or [Area]. Here, the sparkline type has been set to [area].

Source
Preview
index.ts
index.html
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import { Sparkline } from '@syncfusion/ej2-charts';
let sparkline: Sparkline = new Sparkline({
height: '100px',
width: '70%',
dataSource: [
        { x: 0, xval: '2005', yval: 20090440 },
        { x: 1, xval: '2006', yval: 20264080 },
        { x: 2, xval: '2007', yval: 20434180 },
        { x: 3, xval: '2008', yval: 21007310 },
        { x: 4, xval: '2009', yval: 21262640 },
        { x: 5, xval: '2010', yval: 21515750 },
        { x: 6, xval: '2011', yval: 21766710 },
        { x: 7, xval: '2012', yval: 22015580 },
        { x: 8, xval: '2013', yval: 22262500 },
        { x: 9, xval: '2014', yval: 22507620 },
    ],
xName: 'xval', yName: 'yval',
// Assign 'area' as type of sparkline
type:'Area'
}, '#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/ej2/20.3.47/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>

Enable tooltip for sparkline

The sparkline displays additional information through tooltip when the mouse is hovered over the sparkline. You can enable tooltip by setting the [visible] property to true in [tooltipSettings] and injecting SparklineTooltip module using the Sparkline.Inject(SparklineTooltip ) method.

Source
Preview
index.ts
index.html
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import { Sparkline, SparklineTooltip } from '@syncfusion/ej2-charts';
Sparkline.Inject(SparklineTooltip);

let sparkline: Sparkline = new Sparkline({
height: '100px',
width: '70%',
dataSource: [
        { x: 0, xval: '2005', yval: 20090440 },
        { x: 1, xval: '2006', yval: 20264080 },
        { x: 2, xval: '2007', yval: 20434180 },
        { x: 3, xval: '2008', yval: 21007310 },
        { x: 4, xval: '2009', yval: 21262640 },
        { x: 5, xval: '2010', yval: 21515750 },
        { x: 6, xval: '2011', yval: 21766710 },
        { x: 7, xval: '2012', yval: 22015580 },
        { x: 8, xval: '2013', yval: 22262500 },
        { x: 9, xval: '2014', yval: 22507620 },
    ],
xName: 'xval', yName: 'yval',
type:'Area',
// To enable the tooltip for sparkline
tooltipSettings: {
    visible: true,
    format: '${xval} : ${yval}'
}
}, '#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/ej2/20.3.47/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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