JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://cdn.sencha.io/ext-4.1.1-gpl/resources/css/ext-all.css">
<script src="http://cdn.sencha.io/ext-4.1.1-gpl/ext-all-dev.js"></script>

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': 'Lisa',
                "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'
            }
        }
    });

    Ext.create('Ext.grid.Panel', {
        title: 'Simpsons',
        store: store,
        columns: [{
            text: 'Name',
            dataIndex: 'name'
        }, {
            text: 'Email',
            dataIndex: 'email',
            flex: 1
        }, {
            text: 'Phone',
            dataIndex: 'phone'
        }],
        dockedItems: [{
            xtype: 'toolbar',
            dock: 'top',
            items: [{
                xtype: 'button',
                text: 'remove sort',
                listeners: {
                    click: function () {
                        var grid = this.up('grid');
                        console.log(grid.store);
                        grid.store.sorters.clear();
                        grid.view.refresh();
                        grid.getStore().load();
                    }
                }
            }]
        }],
        renderTo: Ext.getBody()
    });

});