Ajax script not working

Hi,

I am facing problem to call an ajax script on onchange event of a textbox.

I have to show a list of quotations in my view and each quotation is having Supplier, Quantity,Price etc. fields. I want to keep the Quantity and price fields as editable.And after editing it should be saved back into db.ie, I have to call a function onblur or onchange event or the textbox.I have written a script and it is no getting invoked.Any help?

I am adding my view code and script below:

following is the code in view to show the required entries in table. I want to update database onblur or onchange evevnt of textboxes with id
itemPrice and itemQuantity. And the ajax script I have written is shown below this code.

@foreach (var item in Model)
                        {
                          bool aprv = Convert.ToBoolean(item.Approved);
                          if (aprv)
                          {
                           var totp = item.Quantity * Convert.ToInt32(item.Price);



                                  @Html.DisplayFor(modelItem => item.SKUMaster.Name)


                                  @Html.DisplayFor(modelItem => item.SKUMaster.PackagingType)


                                  @Html.DisplayFor(modelItem => item.SKUMaster.Manufacturer)


                                  @Html.TextBoxFor(modelItem => item.Price, new { @id = "itemPrice"})


                                  @Html.TextBoxFor(modelItem => item.Quantity, new { @id = "itemQuantity"})


                                 @totp


                                  @Html.DisplayFor(modelItem => item.SupplierMaster.SupplierName)

}
}

The jquery to send changed value of itemPrice textbox to controller is given below:

It is not working. Any help will be appreciated.
Thanks in advance.