Tooltip in JavaScript (ES5) Chart control

JavaScript (ES5)

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Chart will display details about the points through tooltip, when the mouse is moved over the point.

By default, tooltip is not visible. Enable the tooltip by setting enable property to true and by injecting Tooltip module using Chart.Inject(Tooltip).

Source

Preview

index.js

index.html

var chartData = [
    { x: new Date(1975, 0, 1), y: 16, y1: 10, y2: 4.5 },
    { x: new Date(1980, 0, 1), y: 12.5, y1: 7.5, y2: 5 },
    { x: new Date(1985, 0, 1), y: 19, y1: 11, y2: 6.5 },
    { x: new Date(1990, 0, 1), y: 14.4, y1: 7, y2: 4.4 },
    { x: new Date(1995, 0, 1), y: 11.5, y1: 8, y2: 5 },
    { x: new Date(2000, 0, 1), y: 14, y1: 6, y2: 1.5 },
    { x: new Date(2005, 0, 1), y: 10, y1: 3.5, y2: 2.5 },
    { x: new Date(2010, 0, 1), y: 16, y1: 7, y2: 3.7 }
];
var chart = new ej.charts.Chart({
        primaryXAxis: {
            title: 'Years',
            lineStyle: { width: 0 },
            labelFormat: 'y',
            intervalType: 'Years',
            valueType: 'DateTime',
            edgeLabelPlacement: 'Shift'
        },
        primaryYAxis:
        {
            title: 'Percentage (%)',
            minimum: 0, maximum: 20, interval: 2,
            labelFormat: '{value}%'
        },
        series: [
            {
                type: 'StepLine',
                dataSource: chartData, xName: 'x', yName: 'y',
                width: 2, name: 'China',
                marker: {
                    visible: true, width: 10, height: 10
                },
            },
            {
                type: 'StepLine',
                dataSource: chartData, xName: 'x', yName: 'y1',
                width: 2, name: 'Australia',
                marker: {
                    visible: true, width: 10, height: 10
                },
            },
            {
                type: 'StepLine',
                dataSource: chartData, xName: 'x', yName: 'y2',
                width: 2, name: 'Japan',
                marker: {
                    visible: true, width: 10, height: 10
                },

            },
        ],
        title: 'Unemployment Rates 1975-2010',
        //Tooltip for chart
        tooltip: {enable: true}
}, '#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/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>
     <script id="Unemployment" type="text/x-template">
      <div id='templateWrap'>
     <table style="width:100%;  border: 1px solid black;">
     <tr><th colspan="2" bgcolor="#00FFFF">Unemployment</th></tr>
     <tr><td bgcolor="#00FFFF">${x}:</td><td bgcolor="#00FFFF">${y}</td></tr>
    </table>
    </div>
  </script>


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

By default, tooltip shows information of x and y value in points. In addition to that, you can show more information in tooltip. For example the format ${series.name} ${point.x} shows series name and point x value.

Source

Preview

index.js

index.html

var chartData = [
    { x: new Date(1975, 0, 1), y: 16, y1: 10, y2: 4.5 },
    { x: new Date(1980, 0, 1), y: 12.5, y1: 7.5, y2: 5 },
    { x: new Date(1985, 0, 1), y: 19, y1: 11, y2: 6.5 },
    { x: new Date(1990, 0, 1), y: 14.4, y1: 7, y2: 4.4 },
    { x: new Date(1995, 0, 1), y: 11.5, y1: 8, y2: 5 },
    { x: new Date(2000, 0, 1), y: 14, y1: 6, y2: 1.5 },
    { x: new Date(2005, 0, 1), y: 10, y1: 3.5, y2: 2.5 },
    { x: new Date(2010, 0, 1), y: 16, y1: 7, y2: 3.7 }
];
var chart = new ej.charts.Chart({
        primaryXAxis: {
            title: 'Years',
            lineStyle: { width: 0 },
            labelFormat: 'y',
            intervalType: 'Years',
            valueType: 'DateTime',
            edgeLabelPlacement: 'Shift'
        },
        primaryYAxis:
        {
            title: 'Percentage (%)',
            minimum: 0, maximum: 20, interval: 2,
            labelFormat: '{value}%'
        },
        series: [
            {
                type: 'StepLine',
                dataSource: chartData, xName: 'x', yName: 'y',
                width: 2, name: 'China',
                marker: {
                    visible: true, width: 10, height: 10
                },
            },
            {
                type: 'StepLine',
                dataSource: chartData, xName: 'x', yName: 'y1',
                width: 2, name: 'Australia',
                marker: {
                    visible: true, width: 10, height: 10
                },
            },
            {
                type: 'StepLine',
                dataSource: chartData, xName: 'x', yName: 'y2',
                width: 2, name: 'Japan',
                marker: {
                    visible: true, width: 10, height: 10
                },

            },
        ],
        title: 'Unemployment Rates 1975-2010',
        tooltip: {
            enable: true,
            //tooltip format for chart
            format: '${series.name} ${point.x} : ${point.y}'
        }
}, '#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/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>
     <script id="Unemployment" type="text/x-template">
      <div id='templateWrap'>
     <table style="width:100%;  border: 1px solid black;">
     <tr><th colspan="2" bgcolor="#00FFFF">Unemployment</th></tr>
     <tr><td bgcolor="#00FFFF">${x}:</td><td bgcolor="#00FFFF">${y}</td></tr>
    </table>
    </div>
  </script>


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

Any HTML elements can be displayed in the tooltip by using the ‘template’ property of the tooltip. You can use the ${x} and ${y} as place holders in the HTML element to display the x and y values of the corresponding data point.

Source

Preview

index.js

index.html

var chartData = [
    { x: 1975, y: 16, y1: 10, y2: 4.5 },
    { x: 1980, y: 12.5, y1: 7.5, y2: 5 },
    { x: 1985, y: 19, y1: 11, y2: 6.5 },
    { x: 1990, y: 14.4, y1: 7, y2: 4.4 },
    { x: 1995, y: 11.5, y1: 8, y2: 5 },
    { x: 2000, y: 14, y1: 6, y2: 1.5 },
    { x: 2005, y: 10, y1: 3.5, y2: 2.5 },
    { x: 2010, y: 16, y1: 7, y2: 3.7 }
];
var chart = new ej.charts.Chart({
        primaryXAxis: {
            title: 'Years',
            lineStyle: { width: 0 },
            minimum: 1975,
            maximum: 2010,
            interval: 5,
            edgeLabelPlacement: 'Shift'
        },
        primaryYAxis:
        {
            title: 'Percentage (%)',
            minimum: 0, maximum: 20, interval: 2,
            labelFormat: '{value}%'
        },
        series: [
            {
                type: 'StepLine',
                dataSource: chartData, xName: 'x', yName: 'y',
                width: 2, name: 'China',
                marker: {
                    visible: true, width: 10, height: 10
                },
            },
            {
                type: 'StepLine',
                dataSource: chartData, xName: 'x', yName: 'y1',
                width: 2, name: 'Australia',
                marker: {
                    visible: true, width: 10, height: 10
                },
            },
            {
                type: 'StepLine',
                dataSource: chartData, xName: 'x', yName: 'y2',
                width: 2, name: 'Japan',
                marker: {
                    visible: true, width: 10, height: 10
                },

            },
        ],
        title: 'Unemployment Rates 1975-2010',
        tooltip: {
            enable: true,
            //tooltip template for chart
            template: '<div>${x}</div><div>${y}</div>'
        }
}, '#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/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>
     <script id="Unemployment" type="text/x-template">
      <div id='templateWrap'>
     <table style="width:100%;  border: 1px solid black;">
     <tr><th colspan="2" bgcolor="#00FFFF">Unemployment</th></tr>
     <tr><td bgcolor="#00FFFF">${x}:</td><td bgcolor="#00FFFF">${y}</td></tr>
    </table>
    </div>
  </script>


<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 and border properties are used to customize the background color and border of the tooltip respectively. The textStyle property in the tooltip is used to customize the font of the tooltip text.

Source

Preview

index.js

index.html

var chartData = [
    { x: new Date(1975, 0, 1), y: 16, y1: 10, y2: 4.5 },
    { x: new Date(1980, 0, 1), y: 12.5, y1: 7.5, y2: 5 },
    { x: new Date(1985, 0, 1), y: 19, y1: 11, y2: 6.5 },
    { x: new Date(1990, 0, 1), y: 14.4, y1: 7, y2: 4.4 },
    { x: new Date(1995, 0, 1), y: 11.5, y1: 8, y2: 5 },
    { x: new Date(2000, 0, 1), y: 14, y1: 6, y2: 1.5 },
    { x: new Date(2005, 0, 1), y: 10, y1: 3.5, y2: 2.5 },
    { x: new Date(2010, 0, 1), y: 16, y1: 7, y2: 3.7 }
];
var chart = new ej.charts.Chart({
        primaryXAxis: {
            title: 'Years',
            lineStyle: { width: 0 },
            labelFormat: 'y',
            intervalType: 'Years',
            valueType: 'DateTime',
            edgeLabelPlacement: 'Shift'
        },
        primaryYAxis:
        {
            title: 'Percentage (%)',
            minimum: 0, maximum: 20, interval: 2,
            labelFormat: '{value}%'
        },
        series: [
            {
                type: 'StepLine',
                dataSource: chartData, xName: 'x', yName: 'y',
                width: 2, name: 'China',
                marker: {
                    visible: true, width: 10, height: 10
                },
            },
            {
                type: 'StepLine',
                dataSource: chartData, xName: 'x', yName: 'y1',
                width: 2, name: 'Australia',
                marker: {
                    visible: true, width: 10, height: 10
                },
            },
            {
                type: 'StepLine',
                dataSource: chartData, xName: 'x', yName: 'y2',
                width: 2, name: 'Japan',
                marker: {
                    visible: true, width: 10, height: 10
                },

            },
        ],
        title: 'Unemployment Rates 1975-2010',
        tooltip: {
            enable: true,
            format: '${series.name} ${point.x} : ${point.y}',
            //fill for tooltip
            fill: '#7bb4eb',
            //border for tooltip
            border: {
                width: 2,
                color: 'grey'
            }
        }
}, '#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/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>
     <script id="Unemployment" type="text/x-template">
      <div id='templateWrap'>
     <table style="width:100%;  border: 1px solid black;">
     <tr><th colspan="2" bgcolor="#00FFFF">Unemployment</th></tr>
     <tr><td bgcolor="#00FFFF">${x}:</td><td bgcolor="#00FFFF">${y}</td></tr>
    </table>
    </div>
  </script>


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

Tooltip in JavaScript (ES5) Chart control

Default Tooltip

Format the Tooltip

Tooltip Template

Customize the Appearance of Tooltip

See Also