Angularjs的My97DatePicker扩展

在angularjs中My97DatePicker构建后，用的 ng-model 在日期表单上无效

针对这一问题，写了个简单的指令如下

angular.module('app', []).directive('datepicker', function () {
    return {
        restrict: 'A',
        require: '?ngModel',
        scope: {},
        link: function (scope, element, attrs, ngModel) {
            if (!ngModel) return;
            element.on("blur",function () {
                var val = this.value;
                scope.$apply(function () {
                    ngModel.$setViewValue(val);
                });
            })
        }
    };
});

html应用: