When using deep serialization, JavaScript Date objects are not serialized correctly. They are skipped in the buildParams method "for (var name in obj)" code because they are typeof "object" but have no "name" property.

This bug was exposed by using Telerik's Kendo UI grid with server-side filtering enabled.

I tested using the following (near line 9048 of the unminified version) and it seems to resolve the issue:

if (obj instanceof Date)

{

add(prefix, obj);

}

else

{

for (var name in obj)

{

buildParams(prefix + "[" + name + "]", obj[name], traditional, add);

}

}