knockoutjs $index is not working in mapping plungin

Question

I am using asp.net mvc 3 and knockoutjs 2.0 and mapping plugin I have converted my model as json as below using mapping plugin

viewModel=ko.mapping.fromJS(@Html.Raw(Html.Serialize(Model)));

<div class="orders">
        <div data-bind="foreach: JobOrder">
            <div data-bind="text:$index">
            </div>
        </div>
</div>

my model is

 public class Jobs : EntityBase
    {

        [MLLAttr(ObjectType = MLLObjectType.Child, IsCreate = true, ParentName = "Jobs", IsRequired = true)]
        public List<JobOrder> JobOrder { get; set; }
   }

$index is not working.

Thanks in advance

Answer 1

As Michael pointed out, $index was introduced in knockout 2.1. You will need to update to use it