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Crosshair in JavaScript Stock Chart control

06 Jun 2023 / 3 minutes to read

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.

Source
Preview
index.ts
index.html
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import { StockChart } from '@syncfusion/ej2-charts';
import { DateTime, AreaSeries, CandleSeries, HiloOpenCloseSeries, HiloSeries, LineSeries, SplineSeries } from '@syncfusion/ej2-charts';
import { AccumulationDistributionIndicator, AtrIndicator, BollingerBands, EmaIndicator, MomentumIndicator } from '@syncfusion/ej2-charts';
import { MacdIndicator, RsiIndicator, Trendlines, SmaIndicator, StochasticIndicator, Export } from '@syncfusion/ej2-charts';
import { TmaIndicator, RangeTooltip, Crosshair } from '@syncfusion/ej2-charts';
StockChart.Inject(DateTime, AreaSeries, CandleSeries, HiloOpenCloseSeries, HiloSeries, LineSeries, SplineSeries);
StockChart.Inject(AccumulationDistributionIndicator, AtrIndicator, BollingerBands, EmaIndicator, MomentumIndicator);
StockChart.Inject(MacdIndicator, RsiIndicator, SmaIndicator, StochasticIndicator);
StockChart.Inject(Trendlines, TmaIndicator, RangeTooltip, Crosshair, Export);
import { chartData } from './datasource.ts';

let stockChart: StockChart = new StockChart({
       primaryYAxis: {
            lineStyle: { color: 'transparent' },
            majorTickLines: { color: 'transparent', width: 0 },
        },
        primaryXAxis: { majorGridLines: { color: 'transparent' }},
        series: [
            {
                dataSource: chartData,
                type: 'Candle'
            },
        ],
       crosshair: {
            enable: true
        },
        title: 'AAPL Stock Price'
});
stockChart.appendTo('#element');
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<!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" />
    <link href="http://cdn.syncfusion.com/ej2/21.2.3/material.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</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.ts
index.html
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import { StockChart } from '@syncfusion/ej2-charts';
import { DateTime, AreaSeries, CandleSeries, HiloOpenCloseSeries, HiloSeries, LineSeries, SplineSeries } from '@syncfusion/ej2-charts';
import { AccumulationDistributionIndicator, AtrIndicator, BollingerBands, EmaIndicator, MomentumIndicator } from '@syncfusion/ej2-charts';
import { MacdIndicator, RsiIndicator, Trendlines, SmaIndicator, StochasticIndicator, Export } from '@syncfusion/ej2-charts';
import { TmaIndicator, RangeTooltip, Tooltip, Crosshair } from '@syncfusion/ej2-charts';
StockChart.Inject(DateTime, AreaSeries, CandleSeries, HiloOpenCloseSeries, HiloSeries, LineSeries, SplineSeries);
StockChart.Inject(AccumulationDistributionIndicator, AtrIndicator, BollingerBands, EmaIndicator, MomentumIndicator);
StockChart.Inject(MacdIndicator, RsiIndicator, SmaIndicator, StochasticIndicator);
StockChart.Inject(Trendlines, TmaIndicator, RangeTooltip, Tooltip, Crosshair, Export);
import { chartData } from './datasource.ts';

let stockChart: StockChart = new StockChart({
       primaryYAxis: {
            lineStyle: { color: 'transparent' },
            majorTickLines: { color: 'transparent', width: 0 },
            crosshairTooltip: {enable:true}
        },
        primaryXAxis: { majorGridLines: { color: 'transparent' },
        crosshairTooltip: {enable:true}},
        series: [
            {
                dataSource: chartData,
                type: 'Candle'
            }
        ],
       crosshair: {
            enable: true
        },
        title: 'AAPL Stock Price'
});
stockChart.appendTo('#element');
Copied to clipboard
<!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" />
    <link href="http://cdn.syncfusion.com/ej2/21.2.3/material.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</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.ts
index.html
Copied to clipboard
import { StockChart } from '@syncfusion/ej2-charts';
import { DateTime, AreaSeries, CandleSeries, HiloOpenCloseSeries, HiloSeries, LineSeries, SplineSeries } from '@syncfusion/ej2-charts';
import { AccumulationDistributionIndicator, AtrIndicator, BollingerBands, EmaIndicator, MomentumIndicator } from '@syncfusion/ej2-charts';
import { MacdIndicator, RsiIndicator, Trendlines, SmaIndicator, StochasticIndicator, Export } from '@syncfusion/ej2-charts';
import { TmaIndicator, RangeTooltip, Crosshair } from '@syncfusion/ej2-charts';
StockChart.Inject(DateTime, AreaSeries, CandleSeries, HiloOpenCloseSeries, HiloSeries, LineSeries, SplineSeries);
StockChart.Inject(AccumulationDistributionIndicator, AtrIndicator, BollingerBands, EmaIndicator, MomentumIndicator);
StockChart.Inject(MacdIndicator, RsiIndicator, SmaIndicator, StochasticIndicator);
StockChart.Inject(Trendlines, TmaIndicator, RangeTooltip, Crosshair, Export);
import { chartData } from './datasource.ts';

let stockChart: StockChart = new StockChart({
       primaryYAxis: {
            lineStyle: { color: 'transparent' },
            majorTickLines: { color: 'transparent', width: 0 },
            crosshairTooltip: {enable:true,fill: 'green'}
        },
        primaryXAxis: { majorGridLines: { color: 'transparent' },
        crosshairTooltip: {enable:true,fill: 'green'}},
        series: [
            {
                dataSource: chartData,
                type: 'Candle'
            }
        ],
       crosshair: {
            enable: true,
            line: {width: 2, color: 'green'}
        },
        title: 'AAPL Stock Price'
});
stockChart.appendTo('#element');
Copied to clipboard
<!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" />
    <link href="http://cdn.syncfusion.com/ej2/21.2.3/material.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

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

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