Getting started in EJ2 TypeScript Bullet chart control

3 Nov 202314 minutes to read

This section explains how to create a simple Bullet chart and configure its available functionalities in TypeScript using Essential JS 2 quickstart seed repository.

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

Below is the list of minimum dependencies required to use the Bullet Chart.

|-- @syncfusion/ej2-charts
    |-- @syncfusion/ej2-base
    |-- @syncfusion/ej2-data
    |-- @syncfusion/ej2-pdf-export
    |-- @syncfusion/ej2-file-utils
    |-- @syncfusion/ej2-compression
    |-- @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 Bullet Chart to the Project

Open the application in Visual Studio Code and add the Syncfusion JavaScript UI controls.

Add the HTML div tag with its id attribute as element in your ~/src/index.html file to initialize the Bullet chart.

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

<head>
    <title>EJ2 Bullet Chart</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 Bullet Chart-->
     <div id='element'>
     </div>
</body>

</html>

Now import the Bullet Chart component into your app.ts to instantiate a bullet chart and append the bullet chart instance to the #element [src/app/app.ts]

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

// initialize BulletChart component
let bulletChart: BulletChart = new BulletChart();

// render initialized Bullet Chart
bulletChart.appendTo('#element');

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

npm run start

The below example shows a basic Chart.

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

let bulletChart: BulletChart = new BulletChart();

bulletChart.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Bullet Chart</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>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Module Injection

Bullet Chart component are segregated into individual feature-wise modules. In order to use a particular feature, you need to inject its feature module using BulletChart.Inject() method. In the current application,we are going to use tooltip feature of the chart.

  • BulletTooltip - Inject this provider to use tooltip feature.

Now import the above mentioned modules from Bullet Chart package and inject it into the Bullet Chart component using BulletChart.Inject method.

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

BulletChart With Data

This section explains how to plot local data to the Bullet Chart.

let data: any[] = [
       { value: 100, target: 80 },
       { value: 200, target: 180 },
       { value: 300, target: 280 },
       { value: 400, target: 380 },
       { value: 500, target: 480 },
];

Now assign the local data to dataSource property. value and target values should be mapped with valueName and targetName respectively.

import { BulletChart } from '@syncfusion/ej2-charts';
let bulletChart: BulletChart = new BulletChart({
    dataSource: [{ value: 100, target: 80 },
            { value: 200, target: 180 },
            { value: 300, target: 280 },
            { value: 400, target: 380 },
            { value: 500, target: 480 }],
    valueName: 'value',
    targetName: 'target',
    height: '300',
    minimum: 0, maximum: 300, interval: 50,
});
bulletChart.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Bullet Chart</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>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Add Bullet Chart Title

You can add a title using title property to the Bullet Chart to provide quick information to the user about the data plotted in the Bullet Chart.

import { BulletChart } from '@syncfusion/ej2-charts';
let bulletChart: BulletChart = new BulletChart({
    dataSource: [{ value: 270, target: 250 },],
    valueName: 'value',
    targetName: 'target',
    title: 'Revenue',
    minimum: 0, maximum: 300, interval: 50,
});
bulletChart.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Bullet Chart</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>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Ranges

You can add a range using ranges property to the Bullet Chart.

import { BulletChart } from '@syncfusion/ej2-charts';
let bulletChart: BulletChart = new BulletChart({
    dataSource: [{ value: 270, target: 250 },],
    valueName: 'value',
    targetName: 'target',
    title: 'Revenue',
    minimum: 0, maximum: 300, interval: 50,
    ranges: [{ end: 100, color: 'red' },
        { end: 200, color: 'blue' },
        { end: 300, color: 'green' }
        ],
});
bulletChart.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Bullet Chart</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>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Tooltip

You can use tooltip for the Bullet Chart by setting the enable property to true in tooltip object and by injecting the BulletTooltip module using BulletChart.Inject(BulletTooltip) method.

import { BulletChart, BulletTooltip } from '@syncfusion/ej2-charts';
BulletChart.Inject(BulletTooltip);
let bulletChart: BulletChart = new BulletChart({
    tooltip: { enable: true },
    dataSource: [{ value: 70, target: 50 }],
    valueField: 'value',
    targetField: 'target',
    animation: { enable: false },
    ranges: [{ end: 30, color: '#599C20' },
        { end: 60, color: '#EFC820' },
        { end: 100, color: '#CA4218' }
    ],
    minimum: 0, maximum: 100, interval: 10,
    title: 'Revenue YTD'
});
bulletChart.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Bullet Chart</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>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>