add string month year date sort

sorting/stringMonthYear.js

@@ -0,0 +1,46 @@
+/**
+ * This sorting plug-in will sort, in calendar order, data which
+ * is in the format "MMMM yyyy". Inspired by forum discussion:
+ * http://datatables.net/forums/discussion/1242/sorting-dates-with-only-month-and-year
+ *
+ *  @name Date (MMMM yyyy)
+ *  @anchor Sort dates in the format `MMMM yyyy`
+ *  @author Phil Hurwitz
+ *
+ *  @example
+ *    $('#example').DataTable( {
+ *       columnDefs: [
+ *         { type: 'stringMonthYear', targets: 0 }
+ *       ]
+ *    } );
+ */
+
+jQuery.extend(jQuery.fn.dataTableExt.oSort, {
+    "stringMonthYear-pre": function (s) {
+        var months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
+
+        var dateComponents = s.split(" ");
+        dateComponents[0] = dateComponents[0].replace(",", "");
+        dateComponents[1] = jQuery.trim(dateComponents[1]);
+
+        var year = dateComponents[1];
+
+        var month = 0;
+        for (var i = 0; i < months.length; i++) {
+            if (months[i].toLowerCase() == dateComponents[0].toLowerCase()) {
+                month = i;
+                break;
+            }
+        }
+
+        return new Date(year, month, 1);
+    },
+
+    "stringMonthYear-asc": function (a, b) {
+        return ((a < b) ? -1 : ((a > b) ? 1 : 0));
+    },
+
+    "stringMonthYear-desc": function (a, b) {
+        return ((a < b) ? 1 : ((a > b) ? -1 : 0));
+    }
+});