JSFiddle - React, Tailwind, and code Playground

JavaScript

Ext.onReady(function () {

    var store = Ext.create('Ext.data.Store', {
        storeId: 'simpsonsStore',
        fields: ['name', 'email', 'phone'],
        data: {
            'items': [{
                'name': 'Lisa',
                "email": "[email protected]",
                "phone": "555-111-1224"
            }, {
                'name': 'Bart',
                "email": "[email protected]",
                "phone": "555-222-1234"
            }, {
                'name': 'Homer',
                "email": "[email protected]",
                "phone": "555-222-1244"
            }, {
                'name': 'Marge',
                "email": "[email protected]",
                "phone": "555-222-1254"
            }]
        },
        proxy: {
            type: 'memory',
            reader: {
                type: 'json',
                root: 'items'
            }
        }
    });

    var grid = Ext.create('Ext.grid.Panel', {
        title: 'Simpsons',
        store: Ext.data.StoreManager.lookup('simpsonsStore'),
        columns: [{
            text: 'Name',
            dataIndex: 'name'
        }, {
            text: 'Email',
            dataIndex: 'email',
            flex: 1
        }, {
            text: 'Phone',
            dataIndex: 'phone'
        }],
        height: 200,
        width: 400,
        renderTo: Ext.getBody()
    });

    alert(grid.getStore().getAt(1).data.name);

});