Tooltip in React Chart component

React

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28 Nov 2022 / 6 minutes to read

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 into the services.

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject, Legend, DateTime, Tooltip, DataLabel, StepLineSeries } from '@syncfusion/ej2-react-charts';
import { data } from 'datasource.ts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.primaryxAxis = { valueType: 'DateTime' };
        this.tooltip = { enable: true };
        this.marker = { visible: true, width: 10, height: 10 };
    }
    render() {
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} tooltip={this.tooltip} title='Unemployment Rates 1975-2010'>
      <Inject services={[StepLineSeries, Legend, Tooltip, DataLabel, DateTime]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={data} xName='x' yName='y' name='China' width={2} type='StepLine' marker={this.marker}>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { AxisModel, ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject,TooltipSettingsModel,
         Legend, DateTime, Tooltip, DataLabel, StepLineSeries}
from'@syncfusion/ej2-react-charts';
import { data } from 'datasource.ts';

class App extends React.Component<{}, {}> {

  public primaryxAxis: AxisModel = { valueType: 'DateTime' };
  public tooltip: TooltipSettingsModel = { enable: true };
  public marker = { visible: true, width: 10, height: 10 };

  render() {
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      tooltip={this.tooltip}
      title='Unemployment Rates 1975-2010'>
      <Inject services={[StepLineSeries, Legend, Tooltip, DataLabel, DateTime]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={data} xName='x' yName='y' name='China' width={2}
          type='StepLine' marker={this.marker}>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

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.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject, Legend, DateTime, Tooltip, DataLabel, StepLineSeries } from '@syncfusion/ej2-react-charts';
import { data } from 'datasource.ts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.primaryxAxis = { valueType: 'DateTime' };
        this.tooltip = {
            enable: true, header: 'Unemployment',
            format: '<b>${point.x} : ${point.y}</b>'
        };
        this.marker = { visible: true, width: 10, height: 10 };
    }
    render() {
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} tooltip={this.tooltip} title='Unemployment Rates 1975-2010'>
      <Inject services={[StepLineSeries, Legend, Tooltip, DataLabel, DateTime]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={data} xName='x' yName='y' name='China' width={2} type='StepLine' marker={this.marker}>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { AxisModel, ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject,TooltipSettingsModel,
         Legend, DateTime, Tooltip, DataLabel, StepLineSeries}
from'@syncfusion/ej2-react-charts';
import { data } from 'datasource.ts';

class App extends React.Component<{}, {}> {

  public primaryxAxis: AxisModel = { valueType: 'DateTime' };
  public tooltip: TooltipSettingsModel = {
    enable: true, header: 'Unemployment',
    format: '<b>${point.x} : ${point.y}</b>'
  };
  public marker = { visible: true, width: 10, height: 10 };

  render() {
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      tooltip={this.tooltip}
      title='Unemployment Rates 1975-2010'>
      <Inject services={[StepLineSeries, Legend, Tooltip, DataLabel, DateTime]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={data} xName='x' yName='y' name='China' width={2}
          type='StepLine' marker={this.marker}>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

Individual Series Format

You can format the each series tooltip separately using series tooltipFormat property.

Note: If series tooltipFormat is given, it shows the tooltip for that series in that format, or else it will take tooltip format.

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject, Legend, DateTime, Tooltip, DataLabel } from '@syncfusion/ej2-react-charts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.primaryxAxis = { valueType: 'DateTime' };
        this.tooltip = {
            enable: true, header: 'Unemployment',
            format: '<b>${point.x} : ${point.y}</b>'
        };
        this.marker = { visible: true, width: 10, height: 10 };
        this.data1 = [
            { x: 'Sun', y: 15 }, { x: 'Mon', y: 22 },
            { x: 'Tue', y: 32 },
            { x: 'Wed', y: 31 },
            { x: 'Thu', y: 29 }, { x: 'Fri', y: 24 },
            { x: 'Sat', y: 18 },
        ];
        this.data2 = [
            { x: 'Sun', y: 10 }, { x: 'Mon', y: 18 },
            { x: 'Tue', y: 28 },
            { x: 'Wed', y: 28 },
            { x: 'Thu', y: 26 }, { x: 'Fri', y: 20 },
            { x: 'Sat', y: 15 }
        ];
        this.data3 = [
            { x: 'Sun', y: 2 }, { x: 'Mon', y: 12 },
            { x: 'Tue', y: 22 },
            { x: 'Wed', y: 23 },
            { x: 'Thu', y: 19 }, { x: 'Fri', y: 13 },
            { x: 'Sat', y: 8 },
        ];
    }
    render() {
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} tooltip={this.tooltip} title='Unemployment Rates 1975-2010'>
      <Inject services={[StepLineSeries, Legend, Tooltip, DataLabel, DateTime]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.data1} xName='x' yName='y' name='Max Temp' width={2} type='Spline' marker={this.marker} tooltipFormat='${point.x}'>
        </SeriesDirective>
        <SeriesDirective dataSource={this.data2} xName='x' yName='y' name='Avg Temp' width={2} type='Spline' marker={this.marker} tooltipFormat='${point.y}'>
        </SeriesDirective>
        <SeriesDirective dataSource={this.data3} xName='x' yName='y' name='Min Temp' width={2} type='Spline' marker={this.marker}>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { AxisModel, ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject,TooltipSettingsModel,
         Legend, DateTime, Tooltip, DataLabel, SplineSeries}
from'@syncfusion/ej2-react-charts';
import { data } from 'datasource.ts';

class App extends React.Component<{}, {}> {

  public primaryxAxis: AxisModel = { valueType: 'DateTime' };
  public tooltip: TooltipSettingsModel = {
    enable: true, header: 'Unemployment',
    format: '<b>${point.x} : ${point.y}</b>'
  };
  public marker = { visible: true, width: 10, height: 10 };
  public data1: object[] = [
                { x: 'Sun', y: 15 }, { x: 'Mon', y: 22 },
                { x: 'Tue', y: 32 },
                { x: 'Wed', y: 31 },
                { x: 'Thu', y: 29 }, { x: 'Fri', y: 24 },
                { x: 'Sat', y: 18 },
            ];
  public data2: object[] = [
                { x: 'Sun', y: 10 }, { x: 'Mon', y: 18 },
                { x: 'Tue', y: 28 },
                { x: 'Wed', y: 28 },
                { x: 'Thu', y: 26 }, { x: 'Fri', y: 20 },
                { x: 'Sat', y: 15 }
            ];
  public data3: object[] = [
                { x: 'Sun', y: 2 }, { x: 'Mon', y: 12 },
                { x: 'Tue', y: 22 },
                { x: 'Wed', y: 23 },
                { x: 'Thu', y: 19 }, { x: 'Fri', y: 13 },
                { x: 'Sat', y: 8 },
            ];
  render() {
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      tooltip={this.tooltip}
      title='Unemployment Rates 1975-2010'>
      <Inject services={[StepLineSeries, Legend, Tooltip, DataLabel, DateTime]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.data1} xName='x' yName='y' name='Max Temp' width={2}
          type='Spline' marker={this.marker} tooltipFormat='${point.x}'>
        </SeriesDirective>
        <SeriesDirective dataSource={this.data2} xName='x' yName='y' name='Avg Temp' width={2}
          type='Spline' marker={this.marker} tooltipFormat='${point.y}'>
        </SeriesDirective>
        <SeriesDirective dataSource={this.data3} xName='x' yName='y' name='Min Temp' width={2}
          type='Spline' marker={this.marker}>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

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.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject, Legend, DateTime, Tooltip, DataLabel, StepLineSeries } from '@syncfusion/ej2-react-charts';
import { data } from 'datasource.ts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.primaryxAxis = { valueType: 'DateTime' };
        this.template = this.chartTemplate;
        this.tooltip = {
            enable: true,
            template: this.template
        };
        this.marker = { visible: true, width: 10, height: 10 };
    }
    chartTemplate(args) {
        return (<div id="templateWrap">
      <table style={{ width: '100%', margin: '5px', border: '1px solid black', backgroundColor: '#00FFFF' }}>
        <tbody><tr><th colSpan={2}>Unemployment</th></tr>
          <tr><td>{args.x}</td><td>:</td><td>{args.y}</td></tr>
        </tbody>
      </table>
    </div>);
    }
    render() {
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} tooltip={this.tooltip} title='Unemployment Rates 1975-2010'>
      <Inject services={[StepLineSeries, Legend, Tooltip, DataLabel, DateTime]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={data} xName='x' yName='y' name='China' width={2} type='StepLine' marker={this.marker}>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { AxisModel, ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject,TooltipSettingsModel,
         Legend, DateTime, Tooltip, DataLabel, StepLineSeries}
from'@syncfusion/ej2-react-charts';
import { data } from 'datasource.ts';

class App extends React.Component<{}, {}> {

  public primaryxAxis: AxisModel = { valueType: 'DateTime' };
  public template:any =this.chartTemplate;
  public tooltip: TooltipSettingsModel = {
    enable: true,
    template: this.template
  };
  public chartTemplate(args:any){
   return (<div id="templateWrap">
      <table style={{width:'100%',margin: '5px', border: '1px solid black' ,backgroundColor:'#00FFFF'}}>
        <tbody><tr><th colSpan={2}>Unemployment</th></tr>
          <tr><td>{args.x}</td><td>:</td><td>{args.y}</td></tr>
        </tbody>
      </table>
    </div>);
  }
  public marker = { visible: true, width: 10, height: 10 };

  render() {
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      tooltip={this.tooltip}
      title='Unemployment Rates 1975-2010'>
      <Inject services={[StepLineSeries, Legend, Tooltip, DataLabel, DateTime]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={data} xName='x' yName='y' name='China' width={2}
          type='StepLine' marker={this.marker}>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

By default, tooltip shows information of x and y value in points. You can show more information from data source in tooltip by using the tooltipMappingName property of the tooltip. You can use the ${point.tooltip} as place holders to display the specified tooltip content.

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject, Category, Legend, DateTime, Tooltip, DataLabel, ColumnSeries } from '@syncfusion/ej2-react-charts';
import { chartData } from 'datasource.ts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.primaryxAxis = { valueType: 'Category' };
        this.tooltip = { enable: true, format: '${point.tooltip}' };
        this.legendSettings = { visible: false };
    }
    render() {
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} tooltip={this.tooltip} legendSettings={this.legendSettings} title='Internet Users in Million – 2016'>
      <Inject services={[ColumnSeries, Legend, Tooltip, DataLabel, DateTime, Category]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={chartData} xName='x' yName='y' type='Column' tooltipMappingName='country'>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { AxisModel, ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject,TooltipSettingsModel,LegendSettingsModel,Category,
         Legend, DateTime, Tooltip, DataLabel, ColumnSeries}
from'@syncfusion/ej2-react-charts';
import {chartData} from 'datasource.ts';

class App extends React.Component<{}, {}> {

  public primaryxAxis: AxisModel = { valueType: 'Category' };
  public tooltip: TooltipSettingsModel = {enable: true, format: '${point.tooltip}'};
  public legendSettings: LegendSettingsModel = { visible: false};

  render() {
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      tooltip={this.tooltip}
      legendSettings={this.legendSettings}
      title='Internet Users in Million – 2016'>
      <Inject services={[ColumnSeries, Legend, Tooltip, DataLabel, DateTime, Category]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={chartData} xName='x' yName='y'
          type='Column' tooltipMappingName='country'>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

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. The highlightColor property is used to customize the point color while hovering for tooltip.

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject, Legend, DateTime, Tooltip, DataLabel, StepLineSeries } from '@syncfusion/ej2-react-charts';
import { data } from 'datasource.ts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.primaryxAxis = { valueType: 'DateTime' };
        this.tooltip = {
            enable: true, format: '${series.name} ${point.x} : ${point.y}',
            fill: '#7bb4eb', border: {
                width: 2,
                color: 'grey'
            }
        };
        this.marker = { visible: true, width: 10, height: 10 };
        this.titlestyle = {
            fontFamily: "Arial", fontStyle: 'italic', fontWeight: 'regular',
            color: "#E27F2D", size: '23px'
        };
    }
    render() {
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} tooltip={this.tooltip} title='Unemployment Rates 1975-2010' highlightColor='red' titleStyle={this.titlestyle}>
      <Inject services={[StepLineSeries, Legend, Tooltip, DataLabel, DateTime]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={data} xName='x' yName='y' name='China' width={2} type='StepLine' marker={this.marker}>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { AxisModel, ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject,TooltipSettingsModel,
         Legend, DateTime, Tooltip, DataLabel, StepLineSeries}
from'@syncfusion/ej2-react-charts';
import { data } from  'datasource.ts';

class App extends React.Component<{}, {}> {

  public primaryxAxis: AxisModel = { valueType: 'DateTime' };
  public tooltip: TooltipSettingsModel = {
    enable: true, format: '${series.name} ${point.x} : ${point.y}',
    fill: '#7bb4eb', border: {
      width: 2,
      color: 'grey'
    }
  };
  public marker = { visible: true, width: 10, height: 10 };
  public titlestyle = {
    fontFamily: "Arial", fontStyle: 'italic', fontWeight: 'regular',
    color: "#E27F2D", size: '23px'
  };

  render() {
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      tooltip={this.tooltip}
      title='Unemployment Rates 1975-2010'
      highlightColor='red'
      titleStyle={this.titlestyle}>
      <Inject services={[StepLineSeries, Legend, Tooltip, DataLabel, DateTime]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={data} xName='x' yName='y' name='China' width={2}
          type='StepLine' marker={this.marker}>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

Tooltip in React Chart component

Default Tooltip

Format the Tooltip

Individual Series Format

Tooltip Template

Tooltip Mapping Name

Customize the Appearance of Tooltip

See Also