toastr js is not showing toasts

Question

I am using toastr.js for notification, my drop down code is

<%= Html.DropDownListFor(m => m.MakeText, Model.MakeSelect, string.Empty, new { data_bind = "optionsText: Make,value: Make", Id = "ddMake", style = "width: 200px;font-size: 20px" })%>

and in site typescript is

$(document).ready(function () {

viewModel.Make.subscribe(function (item) {       
        item && toastr.success('selected make');
});

)}

but problem is i can not see toasts, once i implement only

toastr.success('selected make')

its work good, Can you please tell me what is the issue in subscribe code.

Thanks

Answer 1

item is falsy. That would mean item && toastr.success('selected make'); gets short-circuited and toastr.success('selected make'); is never evaluated.