Improve DataTable.Net AJAX Adapter (abp.libs.datatables.createAjax) function

docs/en/UI/AspNetCore/Data-Tables.md

@@ -110,7 +110,7 @@ The `createAjax` also supports you to customize request parameters and handle th
 **Example:**
 
 ````csharp
-var inputAction = function () {
+var inputAction = function (requestData, dataTableSettings) {
     return {
         id: $('#Id').val(),
         name: $('#Name').val(),
@@ -131,6 +131,14 @@ var responseCallback = function(result) {
 ajax: abp.libs.datatables.createAjax(acme.bookStore.books.book.getList, inputAction, responseCallback)
 ````
 
+If you don't need access or modify the `requestData` or the `dataTableSettings`, you can specify a **simple object** as the second parameter. 
+
+**Note:** This option should not be used if you need to customise any of the following options: `maxResultCount`, `skipCount`, `sorting`, `filter` - these options will be overwritten by the `createAjax` function so you should specify an `inputAction` **function** instead.
+
+````javascript
+ajax: abp.libs.datatables.createAjax(acme.bookStore.books.book.getList, { id: $('#Id').val(), name: $('#Name').val() })
+````
+
 ### Row Actions
 
 `rowAction` is an option defined by the ABP Framework to the column definitions to show a drop down button to take actions for a row in the table.

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared/wwwroot/libs/abp/aspnetcore-mvc-ui-theme-shared/datatables/datatables-extensions.js

@@ -334,7 +334,10 @@
                 };
             }
             return function (requestData, callback, settings) {
-                var input = inputAction ? inputAction(requestData, settings) : {};
+                var input = typeof inputAction === 'function'
+                    ? inputAction(requestData, settings)
+                    : typeof inputAction === 'object'
+                        ? inputAction : {};
 
                 //Paging
                 if (settings.oInit.paging) {