Range Area in JavaScript (ES5) Chart control

06 Jun 2023 / 2 minutes to read

Range area

To render a range area series, use series type as RangeArea and inject RangeAreaSeries module using Chart.Inject(RangeAreaSeries) method.

Since the RangeArea series requires two y values for a point, you have to add the high and low value. High and Low value specifies the maximum and minimum range of the points.

Source

Preview

index.js

index.html

var series= [];
var value = 70;
var point;

for (var i = 1; i < 70; i++) {
    if (Math.random() > .5) {
        value += Math.random();
    } else {
        value -= Math.random();
    }
    point = { x: new Date(1930 + i, 5, i), high: value, low: value - 14 };
    series.push(point);
}

var chart = new ej.charts.Chart({

    primaryXAxis: {
        title: 'Month',
        valueType: 'DateTime',
        edgeLabelPlacement: 'Shift',
    },

    primaryYAxis:
    {
        title: 'Temperature(Celsius)',
        minimum: 50, maximum: 80, interval: 5,
    },

    series: [
        {
            type: 'RangeArea',
            name: 'India',
            dataSource: series,
            xName: 'x', high: 'high', low: 'low'
        }],
    title: 'Maximum and Minimum Temperature',
}, '#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/ej2/21.2.3/dist/ej2.min.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 range area series.

fill – Specifies the color of the area series.
opacity – Specifies the opacity of fill.
dashArray – Specifies the dashes of series.
border – Specifies the color and width of series border.