math.absolute

HTML

<script src="http://cdn.kendostatic.com/2012.1.515/js/kendo.all.min.js"></script>
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.1.322/styles/kendo.common.min.css">
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.1.322/styles/kendo.default.min.css">
<div id="grid"></div>

JavaScript

var dataSource = new kendo.data.DataSource({
    transport: {
        read: {
            //using jsfiddle echo service to simulate JSON endpoint
            url: "/echo/json/",
            dataType: "json",
            type: "POST",
            data: {
                // /echo/json/ echoes the JSON which you pass as an argument
                json: JSON.stringify([
                    {"foo":10},
                    {"foo":-12},
                    {"foo":12},
                    {"foo":-32}
                ])
            }
        }
    },
    schema: {
        model: {
            fields: {
                foo: {type: "number"}
            }
        }            
    }
});
    
$("#grid").kendoGrid({
    dataSource: dataSource,
    columns: [{ title: "foo", field: "foo", template: "#= foo # >> Abs [#= Math.abs(foo) #]" }]
});