Step line Chart in EJ2 JavaScript control

13 Dec 202424 minutes to read

Step line

To render a step line series in your chart, you need to follow a few steps to configure it correctly. Here’s a concise guide on how to do this:

Set the series type: Define the series type as StepLine in your chart configuration. This indicates that the data should be represented as a step line chart, which connects data points with horizontal and vertical lines, creating a staircase effect. This type is ideal for displaying data that changes at distinct points.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: 390 }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013, 
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        //Series type as step line
        type: 'StepLine'
    }],
    title: 'CO2 - Intensity Analysis'
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Binding data with series

You can bind data to the chart using the dataSource property within the series configuration. This allows you to connect a JSON dataset or remote data to your chart. To display the data correctly, map the fields from the data to the chart series xName and yName properties.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: 390 }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013, 
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        type: 'StepLine'
    }],
    title: 'CO2 - Intensity Analysis'
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Series customization

The following properties can be used to customize the step line series.

Fill

The fill property determines the color applied to the series.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: 390 }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013, 
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        type: 'StepLine',
        fill: 'green'
    }],
    title: 'CO2 - Intensity Analysis'
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

The fill property can be used to apply a gradient color to the step line series. By configuring this property with gradient values, you can create a visually appealing effect in which the color transitions smoothly from one shade to another.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: 390 }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013, 
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        type: 'StepLine',
        fill: 'url(#gradient)'
    }],
    title: 'CO2 - Intensity Analysis'
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <svg style="width:1px; height:1px">
        <defs>
            <linearGradient id="gradient">
                <stop offset="0%" style="stop-color:#FF0000;stop-opacity:5" />
                <stop offset="70%" style="stop-color:#00FF00;stop-opacity:5" />
            </linearGradient>
        </defs>
    </svg>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Opacity

The opacity property specifies the transparency level of the fill. Adjusting this property allows you to control how opaque or transparent the fill color of the series appears.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: 390 }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013, 
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        type: 'StepLine',
        opacity: 0.5
    }],
    title: 'CO2 - Intensity Analysis'
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Dash array

The dashArray property determines the pattern of dashes and gaps in the series.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: 390 }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013, 
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        type: 'StepLine',
        dashArray: '5,5'
    }],
    title: 'CO2 - Intensity Analysis'
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Width

The width property specifies the stroke width applied to the series.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: 390 }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013,
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        type: 'StepLine',
        width: 4
    }],
    title: 'CO2 - Intensity Analysis'
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Step

Use the step property to change the position of the steps in a step line series.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: 390 }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013,
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        type: 'StepLine',
        width: 4,
        step: 'Right'
    }],
    title: 'CO2 - Intensity Analysis'
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

No risers

You can eliminate the vertical lines between points by using the noRisers property in a series. This approach is useful for highlighting trends without the distraction of risers.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: 390 }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013,
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        type: 'StepLine',
        width: 4,
        noRisers: true
    }],
    title: 'CO2 - Intensity Analysis'
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Empty points

Data points with null or undefined values are considered empty. Empty data points are ignored and not plotted on the chart.

Mode

Use the mode property to define how empty or missing data points are handled in the series. The default mode for empty points is Gap.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: undefined }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013,
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        type: 'StepLine',
        width: 2,
        emptyPointSettings: {
            mode: 'Gap'
        }
    }],
    title: 'CO2 - Intensity Analysis'
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Fill

Use the fill property to customize the fill color of empty points in the series.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: undefined }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013,
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        type: 'StepLine',
        width: 2,
        marker: { visible: true, width: 7, height: 7, isFilled: true },
        emptyPointSettings: {
            mode: 'Average',
            fill: '#800000'
        }
    }],
    title: 'CO2 - Intensity Analysis'
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Border

Use the border property to customize the width and color of the border for empty points.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: undefined }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013,
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        type: 'StepLine',
        width: 2,
        marker: { visible: true, width: 7, height: 7, isFilled: true },
        emptyPointSettings: {
            mode: 'Average',
            fill: '#800000',
            border: { color: '#00FFFF', width: 2 }
        }
    }],
    title: 'CO2 - Intensity Analysis'
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Events

Series render

The seriesRender event allows you to customize series properties, such as data, fill, and name, before they are rendered on the chart.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: 390 }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013, 
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        //Series type as step line
        type: 'StepLine', width: 2
    }],
    title: 'CO2 - Intensity Analysis',
    seriesRender: function (args) {
        args.fill = '#ff6347';
    }
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Point render

The pointRender event allows you to customize each data point before it is rendered on the chart.

index.js
index.html
var stepData = [
    { x: 2005, y: 370 }, { x: 2006, y: 378 },
    { x: 2007, y: 416 }, { x: 2008, y: 404 },
    { x: 2009, y: 390 }, { x: 2010, y: 376 },
    { x: 2011, y: 365 }, { x: 2012, y: 350 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        minimum: 2004, 
        maximum: 2013, 
        interval: 1,
        title: 'Year'
    },
    primaryYAxis: {
        minimum: 330, 
        maximum: 450, 
        interval: 30,
        title: 'Intensity (g/kWh)'
    },
    series:[{
        dataSource: stepData,
        xName: 'x', yName: 'y',
        //Series type as step line
        type: 'StepLine', width: 2,
        marker: { visible: true }
    }],
    title: 'CO2 - Intensity Analysis',
    pointRender: function (args) {
        if (args.point.index % 2 !== 0) {
            args.fill = '#ff6347';
        }
        else {
            args.fill = '#009cb8';
        }
    }
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</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://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>