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Crosshair

Crosshair has a vertical and horizontal line to view the value of the axis at mouse or touch position.

Crosshair lines can be enabled by using enable property in the crosshair. Likewise tooltip label for an axis can be enabled by using enable property of crosshairTooltip in the corresponding axis.

Source
Preview
index.js
index.html
var series1 = [];
var series2 = [];
var point1;
var point2;
var value = 60;
var value1 = 50;
var i: number;
for (i = 1; i < 250; i++) {
    if (Math.random() > .5) {
        value += Math.random();
        value1 += Math.random();
    } else {
        value -= Math.random();
        value1 -= Math.random();
    }
    point1 = { x: new Date(2000, i, 1), y: value };
    point2 = { x: new Date(2000, i, 1), y: value1 };
    series1.push(point1);
    series2.push(point2);
}
var char = new ej.charts.Chart({
        primaryXAxis: {
            majorGridLines: { width: 0 },
            valueType: 'DateTime',
            crosshairTooltip: { enable: true },
            labelFormat: 'yMMM'
        },
        primaryYAxis:
        {
            minimum: 10, maximum: 90, interval: 10,
            title: 'Temperature (°F)',
            rowIndex: 0,
            crosshairTooltip: { enable: true }
        },
        axes: [
            {
                majorGridLines: { width: 0 },
                rowIndex: 0, opposedPosition: true,
                minimum: 0, maximum: 160, interval: 20,
                name: 'yAxis', title: 'Rainfall (MM)',
                crosshairTooltip: { enable: true }
            }
        ],
        series: [
            {
                type: 'Line', width: 2, name: 'Temperature',
                dataSource: series1, xName: 'x', yName: 'y'
            },
            {
                type: 'Line', name: 'Rainfall', width: 2,
                dataSource: series2, xName: 'x', yName: 'y',
                yAxisName: 'yAxis'
            }
        ],
        //crosshair for chart
        crosshair: { enable: true },
        legendSettings: { visible: true },
        title: 'Weather Condition'
}, '#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="//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 for axis

Tooltip label for an axis can be enabled by using enable property of crosshairTooltip in the corresponding axis.

Source
Preview
index.js
index.html
var series1 = [];
var series2 = [];
var point1;
var point2;
var value = 60;
var value1 = 50;
var i: number;
for (i = 1; i < 250; i++) {
    if (Math.random() > .5) {
        value += Math.random();
        value1 += Math.random();
    } else {
        value -= Math.random();
        value1 -= Math.random();
    }
    point1 = { x: new Date(2000, i, 1), y: value };
    point2 = { x: new Date(2000, i, 1), y: value1 };
    series1.push(point1);
    series2.push(point2);
}
var char = new ej.charts.Chart({
        primaryXAxis: {
            majorGridLines: { width: 0 },
            valueType: 'DateTime',
            crosshairTooltip: { enable: true },
            labelFormat: 'yMMM'
        },
        primaryYAxis:
        {
            minimum: 10, maximum: 90, interval: 10,
            title: 'Temperature (°F)',
            rowIndex: 0,
            crosshairTooltip: { enable: true }
        },
        axes: [
            {
                majorGridLines: { width: 0 },
                rowIndex: 0, opposedPosition: true,
                minimum: 0, maximum: 160, interval: 20,
                name: 'yAxis', title: 'Rainfall (MM)',
                crosshairTooltip: { enable: true }
            }
        ],
        series: [
            {
                type: 'Line', width: 2, name: 'Temperature',
                dataSource: series1, xName: 'x', yName: 'y'
            },
            {
                type: 'Line', name: 'Rainfall', width: 2,
                dataSource: series2, xName: 'x', yName: 'y',
                yAxisName: 'yAxis'
            }
        ],
        //crosshair for chart
        crosshair: { enable: true },
        legendSettings: { visible: true },
        title: 'Weather Condition'
}, '#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="//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>

Customization

The fill and textStyle property of the crosshairTooltip is used to customize the background color and font style of the crosshair label respectively. Color and width of the crosshair line can be customized by using the line property in the crosshair.

Source
Preview
index.js
index.html
var series1 = [];
var series2 = [];
var point1;
var point2;
var value = 60;
var value1 = 50;
var i: number;
for (i = 1; i < 250; i++) {
    if (Math.random() > .5) {
        value += Math.random();
        value1 += Math.random();
    } else {
        value -= Math.random();
        value1 -= Math.random();
    }
    point1 = { x: new Date(2000, i, 1), y: value };
    point2 = { x: new Date(2000, i, 1), y: value1 };
    series1.push(point1);
    series2.push(point2);
}
var chart = new ej.charts.Chart({
        primaryXAxis: {
            majorGridLines: { width: 0 },
            valueType: 'DateTime',
            crosshairTooltip: { enable: true, fill: 'green' },
            labelFormat: 'yMMM'
        },
        primaryYAxis:
        {
            minimum: 10, maximum: 90, interval: 10,
            title: 'Temperature (°F)',
            rowIndex: 0,
            crosshairTooltip: { enable: true, fill: 'green' },
        },
        axes: [
            {
                majorGridLines: { width: 0 },
                rowIndex: 0, opposedPosition: true,
                minimum: 0, maximum: 160, interval: 20,
                name: 'yAxis', title: 'Rainfall (MM)',
                crosshairTooltip: { enable: true, fill: 'green' },
            }
        ],
        series: [
            {
                type: 'Line', width: 2, name: 'Temperature',
                dataSource: series1, xName: 'x', yName: 'y'
            },
            {
                type: 'Line', name: 'Rainfall', width: 2,
                dataSource: series2, xName: 'x', yName: 'y',
                yAxisName: 'yAxis'
            }
        ],
        crosshair: {
            enable: true,
            //customizing crosshair
            line: {width: 2, color: 'green'} },
        legendSettings: { visible: true },
        title: 'Weather Condition'
}, '#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="//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>

Note: To use crosshair feature, we need to inject Crosshair module Chart.Inject(Crosshair) method.

Trackball

Trackball is used to track a data point closest to the mouse or touch position. Trackball marker indicates the closest point and trackball tooltip displays the information about the point. To use trackball feature, we need to inject Crosshair module and Tooltip module using Chart.Inject(Crosshair, Tooltip).

Trackball can be enabled by setting the enable property of the crosshair to true and shared property in tooltip to true in chart.

Source
Preview
index.js
index.html
var chartData = [
    { x: new Date(2000, 2, 11), y: 15, y1: 39, y2: 60, y3: 75, y4: 85 },
    { x: new Date(2000, 9, 14), y: 20, y1: 30, y2: 55, y3: 75, y4: 83 },
    { x: new Date(2001, 2, 11), y: 25, y1: 28, y2: 48, y3: 68, y4: 85 },
    { x: new Date(2001, 9, 16), y: 21, y1: 35, y2: 57, y3: 75, y4: 87 },
    { x: new Date(2002, 2, 7), y: 13, y1: 39, y2: 62, y3: 71, y4: 82 },
    { x: new Date(2002, 9, 7), y: 18, y1: 41, y2: 64, y3: 69, y4: 74 },
    { x: new Date(2003, 2, 11), y: 24, y1: 45, y2: 57, y3: 81, y4: 73 },
    { x: new Date(2003, 9, 14), y: 23, y1: 48, y2: 53, y3: 84, y4: 75 },
    { x: new Date(2004, 2, 6), y: 19, y1: 54, y2: 63, y3: 85, y4: 73 },
    { x: new Date(2004, 9, 6), y: 31, y1: 55, y2: 50, y3: 87, y4: 60 },
    { x: new Date(2005, 2, 11), y: 39, y1: 57, y2: 66, y3: 75, y4: 48 },
    { x: new Date(2005, 9, 11), y: 50, y1: 60, y2: 65, y3: 70, y4: 55 },
    { x: new Date(2006, 2, 11), y: 24, y1: 60, y2: 79, y3: 85, y4: 40 }
];
var chart = new ej.charts.Chart({
        primaryXAxis: {
            title: 'Years',
            minimum: new Date(2000, 1, 1), maximum: new Date(2006, 2, 11),
            intervalType: 'Years',
            valueType: 'DateTime',
            lineStyle: { width: 0 },
            majorGridLines: { width: 0 },
            edgeLabelPlacement: 'Shift'
        },
        primaryYAxis:
        {
            title: 'Revenue in Millions',
            labelFormat: '{value}M',
            majorTickLines: { width: 0 },
            minimum: 10, maximum: 90,
            lineStyle: { width: 0 }
        },
        series: [
            {
                dataSource: chartData, name: 'John', xName: 'x',
                marker: { visible: true },
                type: 'Line', width: 2,
                yName: 'y'
            },
            {
                dataSource: chartData, name: 'Andrew', xName: 'x',
                marker: { visible: true },
                type: 'Line', width: 2,
                yName: 'y1'
            },
            {
                dataSource: chartData, name: 'Thomas', xName: 'x',
                marker: { visible: true },
                type: 'Line', width: 2,
                yName: 'y2'
            },
            {
                dataSource: chartData, name: 'Mark', xName: 'x',
                marker: { visible: true },
                type: 'Line', width: 2,
                yName: 'y3'
            },
            {
                dataSource: chartData, name: 'William', xName: 'x',
                marker: { visible: true },
                type: 'Line', width: 2,
                yName: 'y4'
            }
        ],
        // trackball for chart
        tooltip: { enable: true, shared: true, format: '${series.name} : ${point.x} : ${point.y}' },
        crosshair: { enable: true, lineType: 'Vertical' },
        title: 'Average Sales per Person'
}, '#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="//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>