jqwidgets-framework/demos/react/app/grid/autosizecolumns/app.js

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

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

import JqxGrid from '../../../jqwidgets-react/react_jqxgrid.js';
import JqxButton from '../../../jqwidgets-react/react_jqxbuttons.js';

class App extends React.Component {
    componentDidMount() {
        this.refs.myButton.on('click', () => {
            this.refs.myGrid.autoresizecolumns();
        });
    }
    render() {
        let source =
            {
                datatype: 'xml',
                datafields: [
                    { name: 'ShippedDate', map: 'm\\:properties>d\\:ShippedDate', type: 'date' },
                    { name: 'Freight', map: 'm\\:properties>d\\:Freight', type: 'float' },
                    { name: 'ShipName', map: 'm\\:properties>d\\:ShipName', type: 'string' },
                    { name: 'ShipAddress', map: 'm\\:properties>d\\:ShipAddress', type: 'string' },
                    { name: 'ShipCity', map: 'm\\:properties>d\\:ShipCity', type: 'string' },
                    { name: 'ShipCountry', map: 'm\\:properties>d\\:ShipCountry', type: 'string' }
                ],
                root: 'entry',
                record: 'content',
                id: 'm\\:properties>d\\:OrderID',
                url: '../sampledata/orders.xml'
            };

        let dataAdapter = new $.jqx.dataAdapter(source);


        let columns =
            [
                { text: 'Ship Name', datafield: 'ShipName', width: 50 },
                { text: 'Shipped Date', datafield: 'ShippedDate', width: 30, cellsformat: 'D' },
                { text: 'Freight', datafield: 'Freight', width: 30, cellsformat: 'F2', cellsalign: 'right' },
                { text: 'Ship Address', datafield: 'ShipAddress', width: 50 },
                { text: 'Ship City', datafield: 'ShipCity', width: 100 },
                { text: 'Ship Country', datafield: 'ShipCountry' }
            ];

        return (
            <div style={{ fontSize: 13, fontFamily: 'Verdana', float: 'left' }}>
                <JqxGrid ref='myGrid'
                    width={850} source={dataAdapter} columns={columns}
                />
                <div style={{ marginTop: 30 }}>
                    <JqxButton ref='myButton' value='Auto Resize Columns' />
                </div>
            </div>
        )
    }
}

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