e.preventdefault puts my Kendo Grid in an infinite loop - kendo-grid

Question

I set a button .onclick to be false and I get the false value in my PHP program:
$confirm = (isset($_GET['confirm']) ? $_GET['confirm'] : '');
I set the variable confirm in my script to the PHP value. In the Kendo dataBinding I check if confirm is false, execute e.preventDefault(). While e.preventDefault() is executing, it appears that the Kendo Grid is trying to be rebuilt and gets in an infinite loop. Please advise.
var sharedDataSource = new kendo.data.DataSource({
transport: {
read: {
url: 'PM_PipeMachineDelay.php?mode=DisplayAll',
dataType: 'json'
}
},
serverFiltering: true
});
$(document).ready(function(){
$("#grid").kendoGrid({
dataSource: sharedDataSource,
dataBound: onDataBound,
height: 700,
sortable: true,
resizeable: true,
selectable: 'row',
dataBinding: function(e) {
if (confirm == "false") {
e.preventDefault();
}
},
change: function(e) {
var gview = $("#grid").data("kendoGrid");
var selectedItem = gview.dataItem(gview.select());
window.location.href = 'PM_PipeMachineDelay.php?mode=Display' +
'&DSTNNO=' + selectedItem.DSTNNO +
'&DSTNID=' + selectedItem.DSTNID +
'&DPRDTE=' + selectedItem.DPRDTE +
'&DPRSHF=' + selectedItem.DPRSHF +
'&DDCATG=' + selectedItem.DDCATG +
'&DDTYPE=' + selectedItem.DDTYPE +
'&DSTTME=' + selectedItem.DSTTME +
'&DSPTME=' + selectedItem.DSPTME +
'&DDTIME=' + selectedItem.DDTIME +
'&DOPRNO=' + selectedItem.DOPRNO +
'&DINV=' + selectedItem.DINV +
'&OSTTME=' + selectedItem.DSTTME +
'&SecLevel=' + selectedItem.SecLevel;
},
filterable: {mode: "row"}, // this seems to make the complete row filterable
/* remember this filter is for the client only; it doesn't go back to the server*/
columns:[
{hidden: true, field: "SecLevel"},
{hidden: true, field: "OSTTME"},
{title:"Station No", field:"DSTNNO", headerFilter:"input"},
{title:"Station ID", field:"DSTNID", headerFilter:"input"},
{title:"Station Description", field:"DSTNDSC", headerFilter:"input"},
{title:"Production Date", field:"DPRDTE", headerFilter:"input"},
{title:"Production Shift", field:"DPRSHF", headerFilter:"input"},
{title:"Delay Category", field:"DDCATG", headerFilter:"input"},
{title:"Delay Type", field:"DDTYPE", headerFilter:"input"},
{title:"Start Time", field:"DSTTME", headerFilter:"input"},
{title:"Stop Time", field:"DSPTME", headerFilter:"input"},
{title:"Delay Time", field:"DDTIME", headerFilter:"input"},
{title:"Operator", field:"DOPRNO", headerFilter:"input"},
{title:"Inventory #", field:"DINV", headerFilter:"input"},
],
});
});```