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Tooltip in React Chart component

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

Default Tooltip

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.tsx
index.jsx
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"));
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"));

Format the Tooltip

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.tsx
index.jsx
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"));
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"));

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.tsx
index.jsx
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"));
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"));

Tooltip Template

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.tsx
index.jsx
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"));
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"));

Tooltip Mapping Name

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.tsx
index.jsx
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"));
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"));

Customize the Appearance of Tooltip

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.tsx
index.jsx
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'
      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 { 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' 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"));

See Also

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