JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://cdn.kendostatic.com/2012.2.710/js/kendo.all.min.js"></script>
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.2.710/styles/kendo.common.min.css">
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.2.710/styles/kendo.default.min.css">
<div id="grid"></div>

JavaScript

var grid = $("#grid").kendoGrid({
    dataSource: {
        data: [
            {"foo": {"bar": 10}},
            {"foo": {"bar": 20}}
        ],
    
        aggregate: [
            {field: "foo.bar", aggregate: "sum"}
        ]
    },
    columns: [
        {
            field: "foo.bar",
            footerTemplate: "Sum: #= sum # "
        }
    ]   
}).data("kendoGrid");