Fix #2418

Example: http://jsfiddle.net/djhvscf/jdjn8d1z/3/

src/extensions/filter-control/bootstrap-table-filter-control.js

@@ -332,6 +332,7 @@
                     if (column.filterControl !== undefined && column.filterControl.toLowerCase() === 'datepicker') {
                         header.find('.date-filter-control.bootstrap-table-filter-control-' + column.field).datepicker(column.filterDatepickerOptions)
                             .on('changeDate', function (e) {
+                                $(sprintf(".%s", e.currentTarget.classList.toString().split(" ").join("."))).val(e.currentTarget.value);
                                 //Fired the keyup event
                                 $(e.currentTarget).keyup();
                             });