I figured this out. I just needed to do it as follows:
<ejs-grid id="Grid" rowHeight="30" style="padding-bottom:230px;margin-top:0 !important" enableAltRow="true" gridLines="Both" height="100%" enableHover="true" showColumnChooser="true" toolbarClick="toolbarClick" toolbar="toolbaritems" pdfExportComplete="pdfExportComplete" excelExportComplete="excelExportComplete" dataBound="dataBound" allowPaging="true" allowSorting="true" allowFiltering="true" allowGrouping="true" allowTextWrap="true" allowResizing="true" allowReordering="true" allowPdfExport="true" allowExcelExport="true" contextMenuItems="@(new List<object>() { "AutoFit", "AutoFitAll", "SortAscending", "SortDescending","Copy", "Edit", "Delete", "Save", "Cancel","PdfExport", "ExcelExport", "FirstPage", "PrevPage","LastPage", "NextPage"})">
<e-grid-columns>
<e-grid-column field="ID" template="#edit_template" headerText="ID" isPrimaryKey="true" type="number" textAlign="Center"></e-grid-column>
<e-grid-column field="TEAM_NAME" headerText="Team" filter="@(new { type="CheckBox"})" textAlign="Center"></e-grid-column>
</e-grid-columns>
</ejs-grid>
<script id="edit_template" type="text/x-template">
<div class="image">
<button onclick="myFunction(${getArgs(data)})" class="e-tbar-btn e-tbtn-txt e-control e-btn e-lib ttip" title="Click me to edit this record" type="button" id="Grid_edit" tabindex="-1" style="height:22px;width: auto;padding-top:0" aria-label="Edit">
<span class="e-btn-icon e-edit e-icons e-icon-center" style="color:white;margin-top:-5px !important"></span><span class="e-tbar-btn-text"></span>
</button>
</div>
</script>
function getArgs(args) {
return JSON.stringify(args);
}
function myFunction(args) {
alert(args.ID+":" + args.TEAM_NAME);
}