jqwidgets-scripts-custom/demos/React/app/chart/liveupdates/app.js

jQWidgets is an advanced jQuery, Angular 7, Vue, React, ASP .NET MVC, Custom Elements and HTML5 UI framework.

import React from 'react';
import ReactDOM from 'react-dom';

import JqxChart from '../../../jqwidgets-react/react_jqxchart.js';
import JqxDropDownList from '../../../jqwidgets-react/react_jqxdropdownlist.js';

class App extends React.Component {
    componentDidMount() {
        this.refs.dropDownColors.on('change', (event) => {
            let value = event.args.item.value;
            this.refs.myChart.colorScheme(value);
            this.refs.myChart.update();
        });
        this.refs.dropDownSeries.on('change', (event) => {
            let args = event.args;
            if (args) {
                let value = args.item.value;
                let isLine = value.indexOf('line') != -1;
                let isArea = value.indexOf('area') != -1;
                let group = this.refs.myChart.seriesGroups()[0];
                group.series[0].opacity = group.series[1].opacity = isArea ? 0.7 : 1;
                group.series[0].lineWidth = group.series[1].lineWidth = isLine ? 2 : 1;
                this.refs.myChart.seriesGroups()[0].type = value;
                this.refs.myChart.update();
            }
        });

        let data = this.refs.myChart.source();
        let timer = setInterval( () => {
            let max = 800;
            for (let i = 0; i < data.length; i++) {
                data[i].a = Math.max(100, (Math.random() * 1000) % max);
                data[i].b = Math.max(100, (Math.random() * 1000) % max);
            }
            this.refs.myChart.update();
        }, 3000);
    }
    render() {
        let data = [
            { a: 100, b: 200, c: 1 },
            { a: 120, b: 140, c: 2 },
            { a: 100, b: 110, c: 3 },
            { a: 90, b: 135, c: 4 },
            { a: 70, b: 210, c: 5 },
            { a: 170, b: 210, c: 5 },
            { a: 270, b: 350, c: 5 },
            { a: 710, b: 410, c: 5 },
            { a: 230, b: 305, c: 5 }
        ];

        let padding = { left: 5, top: 5, right: 5, bottom: 5 };

        let titlePadding = { left: 0, top: 0, right: 0, bottom: 10  };

        let xAxis =
            {
                unitInterval: 1,
                gridLines: { interval: 2 },
                valuesOnTicks: false
            };

        let valueAxis =
            {
                minValue: 0,
                maxValue: 1000,
                title: { text: 'Index Value' },
                labels: { horizontalAlignment: 'right' }
            };

        let seriesGroups =
            [
                {
                    type: 'column',
                    columnsGapPercent: 50,
                    alignEndPointsWithIntervals: true,
                    series: [
                        { dataField: 'a', displayText: 'a', opacity: 1, lineWidth: 1, symbolType: 'circle', fillColorSymbolSelected: 'white', radius: 15 },
                        { dataField: 'b', displayText: 'b', opacity: 1, lineWidth: 1, symbolType: 'circle', fillColorSymbolSelected: 'white', radius: 15 }
                    ]
                }
            ];

        let colorsSchemesList = ['scheme01', 'scheme02', 'scheme03', 'scheme04', 'scheme05', 'scheme06', 'scheme07', 'scheme08'];
        let seriesList = ['splinearea', 'spline', 'column', 'scatter', 'stackedcolumn', 'stackedsplinearea', 'stackedspline'];
        return (
            <div>
                <JqxChart ref='myChart' style={{ width: 850, height: 500 }}
                    title={'Live updates demo'} description={''} animationDuration={1000}
                    showLegend={true} enableAnimations={true} padding={padding} enableAxisTextAnimation={true}
                    titlePadding={titlePadding} source={data} xAxis={xAxis}
                    valueAxis={valueAxis} colorScheme={'scheme03'} seriesGroups={seriesGroups}
                />
                <table style={{ width: 680 }}>
                    <tbody>
                        <tr>
                            <td style={{ paddingLeft: 50 }}>
                                <p>Select the series type:</p>
                                <JqxDropDownList ref='dropDownSeries'
                                    width={200} height={25} selectedIndex={2}
                                    dropDownHeight={100} source={seriesList}
                                />
                            </td>
                            <td>
                                <p>Select color scheme:</p>
                                <JqxDropDownList ref='dropDownColors'
                                    width={200} height={25} selectedIndex={2}
                                    dropDownHeight={100} source={colorsSchemesList}
                                />
                            </td>
                        </tr>
                    </tbody>
                </table>
            </div>
        )
    }
}

ReactDOM.render(<App />, document.getElementById('app'));