High Low Chart in EJ2 JavaScript Charts

7 May 202524 minutes to read

Hilo

To render a hilo 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 Hilo in your chart configuration. This indicates that the data should be represented as a hilo chart, which shows the high and low values for each data point, illustrating price movements in stocks and providing a clear visualization of price ranges.
Provide high and low values: The Hilo series requires two y-values for each data point, you need to specify both the high and low values. The high value represents the maximum price, while the low value represents the minimum price of the stock.

index.js
index.html
var chartData = [
    { x: 'Jan', low: 87, high: 200 }, { x: 'Feb', low: 45, high: 135 },
    { x: 'Mar', low: 19, high: 85 },  { x: 'Apr', low: 31, high: 108 },
    { x: 'May', low: 27, high: 80 },  { x: 'Jun', low: 84, high: 130 },
    { x: 'Jul', low: 77, high: 150 }, { x: 'Aug', low: 54, high: 125 },
    { x: 'Sep', low: 60, high: 155 }, { x: 'Oct', low: 60, high: 180 },
    { x: 'Nov', low: 88, high: 180 }, { x: 'Dec', low: 84, high: 230 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Months'
    },
    primaryYAxis:
    {
        labelFormat: '{value}mm',
        edgeLabelPlacement: 'Shift',
        title: 'Rainfall'
    },
    series: [
        {
            dataSource: chartData,
            xName: 'x', high: 'high', low: 'low',
            //Series type as Hilo
            type: 'Hilo'
        }
    ],
    title: 'Maximum and Minimum Rainfall'
}, '#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/ej2/29.2.4/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, high, and low properties.

index.js
index.html
var chartData = [
    { x: 'Jan', low: 87, high: 200 }, { x: 'Feb', low: 45, high: 135 },
    { x: 'Mar', low: 19, high: 85 },  { x: 'Apr', low: 31, high: 108 },
    { x: 'May', low: 27, high: 80 },  { x: 'Jun', low: 84, high: 130 },
    { x: 'Jul', low: 77, high: 150 }, { x: 'Aug', low: 54, high: 125 },
    { x: 'Sep', low: 60, high: 155 }, { x: 'Oct', low: 60, high: 180 },
    { x: 'Nov', low: 88, high: 180 }, { x: 'Dec', low: 84, high: 230 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Months'
    },
    primaryYAxis:
    {
        labelFormat: '{value}mm',
        edgeLabelPlacement: 'Shift',
        title: 'Rainfall'
    },
    series: [
        {
            dataSource: chartData,
            xName: 'x', high: 'high', low: 'low',
            //Series type as Hilo
            type: 'Hilo'
        }
    ],
    title: 'Maximum and Minimum Rainfall'
}, '#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/ej2/29.2.4/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 hilo series.

Fill

The fill property determines the color applied to the series.

index.js
index.html
var chartData = [
    { x: 'Jan', low: 87, high: 200 }, { x: 'Feb', low: 45, high: 135 },
    { x: 'Mar', low: 19, high: 85 },  { x: 'Apr', low: 31, high: 108 },
    { x: 'May', low: 27, high: 80 },  { x: 'Jun', low: 84, high: 130 },
    { x: 'Jul', low: 77, high: 150 }, { x: 'Aug', low: 54, high: 125 },
    { x: 'Sep', low: 60, high: 155 }, { x: 'Oct', low: 60, high: 180 },
    { x: 'Nov', low: 88, high: 180 }, { x: 'Dec', low: 84, high: 230 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Months'
    },
    primaryYAxis:
    {
        labelFormat: '{value}mm',
        edgeLabelPlacement: 'Shift',
        title: 'Rainfall'
    },
    series: [
        {
            dataSource: chartData,
            xName: 'x', high: 'high', low: 'low',
            type: 'Hilo', fill: 'blue'
        }
    ],
    title: 'Maximum and Minimum Rainfall'
}, '#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/ej2/29.2.4/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 hilo 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 chartData = [
    { x: 'Jan', low: 87, high: 200 }, { x: 'Feb', low: 45, high: 135 },
    { x: 'Mar', low: 19, high: 85 },  { x: 'Apr', low: 31, high: 108 },
    { x: 'May', low: 27, high: 80 },  { x: 'Jun', low: 84, high: 130 },
    { x: 'Jul', low: 77, high: 150 }, { x: 'Aug', low: 54, high: 125 },
    { x: 'Sep', low: 60, high: 155 }, { x: 'Oct', low: 60, high: 180 },
    { x: 'Nov', low: 88, high: 180 }, { x: 'Dec', low: 84, high: 230 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Months'
    },
    primaryYAxis:
    {
        labelFormat: '{value}mm',
        edgeLabelPlacement: 'Shift',
        title: 'Rainfall'
    },
    series: [
        {
            dataSource: chartData,
            xName: 'x', high: 'high', low: 'low',
            type: 'Hilo', fill: 'url(#gradient)'
        }
    ],
    title: 'Maximum and Minimum Rainfall'
}, '#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/ej2/29.2.4/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:blue;stop-opacity:5" />
                <stop offset="50%" style="stop-color:violet;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 chartData = [
    { x: 'Jan', low: 87, high: 200 }, { x: 'Feb', low: 45, high: 135 },
    { x: 'Mar', low: 19, high: 85 },  { x: 'Apr', low: 31, high: 108 },
    { x: 'May', low: 27, high: 80 },  { x: 'Jun', low: 84, high: 130 },
    { x: 'Jul', low: 77, high: 150 }, { x: 'Aug', low: 54, high: 125 },
    { x: 'Sep', low: 60, high: 155 }, { x: 'Oct', low: 60, high: 180 },
    { x: 'Nov', low: 88, high: 180 }, { x: 'Dec', low: 84, high: 230 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Months'
    },
    primaryYAxis:
    {
        labelFormat: '{value}mm',
        edgeLabelPlacement: 'Shift',
        title: 'Rainfall'
    },
    series: [
        {
            dataSource: chartData,
            xName: 'x', high: 'high', low: 'low',
            type: 'Hilo', opacity: 0.5
        }
    ],
    title: 'Maximum and Minimum Rainfall'
}, '#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/ej2/29.2.4/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 chartData = [
    { x: 'Jan', low: 87, high: 200 },  { x: 'Feb', low: 45, high: 135 },
    { x: 'Mar', low: 19, high: null }, { x: 'Apr', low: 31, high: 108 },
    { x: 'May', low: 27, high: 80 },   { x: 'Jun', low: 84, high: 130 },
    { x: 'Jul', low: 77, high: 150 },  { x: 'Aug', low: 54, high: undefined },
    { x: 'Sep', low: 60, high: 155 },  { x: 'Oct', low: 60, high: 180 },
    { x: 'Nov', low: 88, high: 180 },  { x: 'Dec', low: 84, high: 230 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Months'
    },
    primaryYAxis:
    {
        labelFormat: '{value}mm',
        edgeLabelPlacement: 'Shift',
        title: 'Rainfall'
    },
    series: [
        {
            dataSource: chartData,
            xName: 'x', high: 'high', 
            low: 'low',
            type: 'Hilo',
            emptyPointSettings: {
                mode: 'Average'
            }
        }
    ],
    title: 'Maximum and Minimum Rainfall'
}, '#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/ej2/29.2.4/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 chartData = [
    { x: 'Jan', low: 87, high: 200 },  { x: 'Feb', low: 45, high: 135 },
    { x: 'Mar', low: 19, high: null }, { x: 'Apr', low: 31, high: 108 },
    { x: 'May', low: 27, high: 80 },   { x: 'Jun', low: 84, high: 130 },
    { x: 'Jul', low: 77, high: 150 },  { x: 'Aug', low: 54, high: undefined },
    { x: 'Sep', low: 60, high: 155 },  { x: 'Oct', low: 60, high: 180 },
    { x: 'Nov', low: 88, high: 180 },  { x: 'Dec', low: 84, high: 230 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Months'
    },
    primaryYAxis:
    {
        labelFormat: '{value}mm',
        edgeLabelPlacement: 'Shift',
        title: 'Rainfall'
    },
    series: [
        {
            dataSource: chartData,
            xName: 'x', high: 'high', 
            low: 'low',
            type: 'Hilo',
            emptyPointSettings: {
                mode: 'Average',
                fill: 'red'
            }
        }
    ],
    title: 'Maximum and Minimum Rainfall'
}, '#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/ej2/29.2.4/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 chartData = [
    { x: 'Jan', low: 87, high: 200 }, { x: 'Feb', low: 45, high: 135 },
    { x: 'Mar', low: 19, high: 85 },  { x: 'Apr', low: 31, high: 108 },
    { x: 'May', low: 27, high: 80 },  { x: 'Jun', low: 84, high: 130 },
    { x: 'Jul', low: 77, high: 150 }, { x: 'Aug', low: 54, high: 125 },
    { x: 'Sep', low: 60, high: 155 }, { x: 'Oct', low: 60, high: 180 },
    { x: 'Nov', low: 88, high: 180 }, { x: 'Dec', low: 84, high: 230 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Months'
    },
    primaryYAxis:
    {
        labelFormat: '{value}mm',
        edgeLabelPlacement: 'Shift',
        title: 'Rainfall'
    },
    series: [
        {
            dataSource: chartData,
            xName: 'x', high: 'high', low: 'low',
            //Series type as Hilo
            type: 'Hilo'
        }
    ],
    title: 'Maximum and Minimum Rainfall',
    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/ej2/29.2.4/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 chartData = [
    { x: 'Jan', low: 87, high: 200 }, { x: 'Feb', low: 45, high: 135 },
    { x: 'Mar', low: 19, high: 85 },  { x: 'Apr', low: 31, high: 108 },
    { x: 'May', low: 27, high: 80 },  { x: 'Jun', low: 84, high: 130 },
    { x: 'Jul', low: 77, high: 150 }, { x: 'Aug', low: 54, high: 125 },
    { x: 'Sep', low: 60, high: 155 }, { x: 'Oct', low: 60, high: 180 },
    { x: 'Nov', low: 88, high: 180 }, { x: 'Dec', low: 84, high: 230 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Months'
    },
    primaryYAxis:
    {
        labelFormat: '{value}mm',
        edgeLabelPlacement: 'Shift',
        title: 'Rainfall'
    },
    series: [
        {
            dataSource: chartData,
            xName: 'x', high: 'high', low: 'low',
            //Series type as Hilo
            type: 'Hilo'
        }
    ],
    title: 'Maximum and Minimum Rainfall',
    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/ej2/29.2.4/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>