jqwidgets-scripts-custom/demos/React/app/grid/computedcolumn/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 JqxGrid from '../../../jqwidgets-react/react_jqxgrid.js';

class App extends React.Component {
    render() {
        let source =
            {
                localdata: generatedata(200),
                datatype: 'array',
                updaterow: (rowid, rowdata, commit) => {
                    // synchronize with the server - send update command
                    // call commit with parameter true if the synchronization with the server is successful 
                    // and with parameter false if the synchronization failder.
                    commit(true);
                },
                datafields:
                [
                    { name: 'firstname', type: 'string' },
                    { name: 'lastname', type: 'string' },
                    { name: 'productname', type: 'string' },
                    { name: 'available', type: 'bool' },
                    { name: 'quantity', type: 'number' },
                    { name: 'price', type: 'number' },
                    { name: 'date', type: 'date' }
                ]
            };

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

        let columns =
            [
                { text: 'First Name', columntype: 'textbox', datafield: 'firstname', width: 80 },
                { text: 'Last Name', datafield: 'lastname', columntype: 'textbox', width: 80 },
                { text: 'Product', columntype: 'dropdownlist', datafield: 'productname', width: 195 },
                {
                    text: 'Quantity', datafield: 'quantity', width: 100, align: 'right', cellsalign: 'right', columntype: 'numberinput',
                    validation: (cell, value) => {
                        if (value < 0 || value > 1500) {
                            return { result: false, message: 'Quantity should be in the 0-150 interval' };
                        }
                        return true;
                    },
                    createeditor: (row, cellvalue, editor) => {
                        editor.jqxNumberInput({ decimalDigits: 0, digits: 3 });
                    }
                },
                {
                    text: 'Price', datafield: 'price', align: 'right', cellsalign: 'right', cellsformat: 'c2', columntype: 'numberinput',
                    validation: (cell, value) => {
                        if (value < 0 || value > 1500) {
                            return { result: false, message: 'Price should be in the 0-15 interval' };
                        }
                        return true;
                    },
                    createeditor: (row, cellvalue, editor) => {
                        editor.jqxNumberInput({ digits: 3 });
                    }
                },
                {
                    text: 'Total', editable: false, datafield: 'total',
                    cellsrenderer: (index, datafield, value, defaultvalue, column, rowdata) => {
                        let total = parseFloat(rowdata.price) * parseFloat(rowdata.quantity);
                        return '<div style="margin: 4px;" class="jqx-right-align">' + dataAdapter.formatNumber(total, 'c2') + '</div>';
                    }
                }
            ];

        return (
            <JqxGrid
                width={850} source={dataAdapter} editable={true}
                columns={columns} selectionmode={'multiplecellsadvanced'}
            />
        )
    }
}

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