Kendo UI Grid multi select slow and unresponsive -


i have kendo ui grid allows multiply row selection using check boxes located on each row.

as select each item, there delay before row highlighted. selection becomes progressively slow , unresponsive.

i suspect adding/removal of classes in function "updatenamelist" culprit, not know of way of achieving this.

any appreciated, thanks.

@(html.kendo().grid<myitems>()            .name("myitems")     .datasource(         datasource => datasource             .ajax()             .serveroperation(false)             .read(read => read.action("getmyitems", "itemmgr", new { id = new guid("e1cb204d-74cd-4995-a14f-f5a6fffcb2e7"), accountid = viewbag.accountid }))             .model(m => m.id(mx => mx.itemid))         )           .columns(columns =>           {         columns.bound(c => c.name).template(@<text></text>).clienttemplate("<input type='checkbox' class='name-select-chk' data-target='#= name #' />").headertemplate("").width(20);         columns.bound(c => c.name).width(60).title("name");         columns.bound(c => c.status).width(60).title("status");                                .filterable()     .sortable()     .selectable(select => select.mode(gridselectionmode.single))     .events(         e=>e.change("selection_change")     )    )        function selection_change(arg) {          var selecteditem = this.dataitem(this.select());          if ($.inarray(selecteditem.name, selectednames) >= 0) {             selectednames.splice(selectednames.indexof(selecteditem.name), 1);         } else {             selectednames[selectednames.length] = selecteditem.name;         }          updatenamelist(arg);     }      function updatenamelist(e) {          var names = "";         (i = 0; < selectednames.length; i++) {             names += selectednames[i];             if (i < selectednames.length-1) {                 names += ", ";             }         }          $("#myitems tr").each(function (index) {             $(this).removeclass("k-state-selected");             $(this).find("input").prop('checked', false);             (i = 0; < selectednames.length; i++) {                 if ($(':nth-child(2)', this)[0].innerhtml == selectednames[i]) {                     $(this).addclass("k-state-selected");                     $(this).find("input").prop('checked', true);                 }             }         });     }


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