Getting started in EJ2 TypeScript Sparkline control

3 Nov 202315 minutes to read

This section explains the steps to create a simple Sparkline and demonstrates the basic usage of the TreeGrid component using the Essential JS 2 quickstart seed repository. This seed repository is pre-configured with the Essential JS 2 package.

This application is integrated with the webpack.config.js configuration and uses the latest version of the webpack-cli. It requires node v14.15.0 or higher. For more information about webpack and its features, refer to the webpack documentation.

Dependencies

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

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

Set up development environment

Open the command prompt from the required directory, and run the following command to clone the Syncfusion JavaScript (Essential JS 2) quickstart project from GitHub.

git clone https://github.com/SyncfusionExamples/ej2-quickstart-webpack- ej2-quickstart

After cloning the application in the ej2-quickstart folder, run the following command line to navigate to the ej2-quickstart folder.

cd ej2-quickstart

Add Syncfusion JavaScript packages

Syncfusion JavaScript (Essential JS 2) packages are available on the npmjs.com public registry. You can install all Syncfusion JavaScript (Essential JS 2) controls in a single @syncfusion/ej2 package or individual packages for each control.

The quickstart application is preconfigured with the dependent @syncfusion/ej2 package in the ~/package.json file. Use the following command to install the dependent npm packages from the command prompt.

npm install

Add sparkline to project

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

<!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" />
</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.

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.

npm run start
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.

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.

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 },
        ],
    // Assign the dataSource values to series of sparkline 'xName and yName'
    xName: 'xval', yName: 'yval'
    });
    sparkline.appendTo("#element");
<!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="https://cdn.syncfusion.com/ej2/28.1.33/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>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></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].

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',
    // Assign 'area' as type of sparkline
    type:'Area'
});
sparkline.appendTo("#element");
<!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="https://cdn.syncfusion.com/ej2/28.1.33/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>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></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.

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}'
     }
 });
 sparkline.appendTo("#element");
<!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="https://cdn.syncfusion.com/ej2/28.1.33/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>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

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

</html>