为什么datepicker值不变?

时间:2017-02-06 10:30:41

标签: javascript angularjs

我在表单中有两个日期选择器。当用户选择第一个日期时,应更新第二个日期选择器的最小和最大日期(距离选择一年)。但在我的情况下,当我第一次在第一个datepicker中选择日期时,最小和最大日期只更新一次。但是,如果我更改选择,则第二个日期选择器不会使用更改的值进行修改。

HTML:

<div class="form-group">
        <label>Model Production Date</label>
        <input date-picker1 type="text" class="form-control" placeholder="Production Date" ng-model="productionDate">
      </div>
      <div class="form-group">
        <label>Next Review Date</label>
        <input date-picker2 type="text" class="form-control" placeholder="Next Review Date" ng-model="nextReviewDate">
      </div>

JS:

.directive('datePicker1', function () {

return function (scope, element, attrs) {

    element.datepicker({
        format: "yyyy/mm/dd",
        todayHighlight: true,
        //startDate: stDate || new Date(),
        //endDate:enDate || new Date(),
        autoclose: true 
    }); 
    scope.$watch('productionDate', function (newVal, oldVal) {

        if(newVal){
            scope['productionDate'] = newVal;
        }
        else{
            return;
        }
    });         
};

})  



.directive('datePicker2', function () {

return {
    restrict: 'A',
    link: linker,

}

function linker(scope, $element, attrs) {


    scope.$watch('productionDate', function (newVal, oldVal) {
        console.log('productionDate===='+scope.productionDate);
        splittedDateString = scope.productionDate.split('/');
        stDate = new Date(splittedDateString[0], splittedDateString[1]-1, splittedDateString[2]);
        enDate = new Date(stDate.getFullYear()+1, splittedDateString[1]-1, splittedDateString[2]);
        console.log("Start Date = "+stDate);
        console.log("End Date = "+enDate);
        $element.datepicker({
            format: "yyyy/mm/dd",
            todayHighlight: true,
            startDate: stDate || new Date(),
            endDate:enDate || new Date(),
            autoclose: true 
        }); 

    });         
};

})

每次我都可以看到stDateenDate值已更改,但第二个datepicker开始日期和结束日期未更新。我被困了2天。请帮忙

1 个答案:

答案 0 :(得分:0)

将值传递给指令时,会创建隔离范围。您可以使用指令的scope属性定义如何处理传递给此指令的值。

.directive('datePicker2', function () {

    return {
        scope: {
            name: "=",
        },
        link: linker
    }

    function linker (scope, element, attrs) {
        scope.$watch('productionDate', function (newVal, oldVal) {
            console.log('productionDate===='+scope.productionDate);
            splittedDateString = scope.productionDate.split('/');
            stDate = new Date(splittedDateString[0], splittedDateString[1]-1, splittedDateString[2]);
            enDate = new Date(stDate.getFullYear()+1, splittedDateString[1]-1, splittedDateString[2]);
            element.datepicker({
                format: "yyyy/mm/dd",
                todayHighlight: true,
                startDate: stDate || new Date(),
                endDate:enDate || new Date(),
                autoclose: true
            });
            if(newVal){
                scope['nextReviewDate'] = newVal;
            }
            else{
                scope['nextReviewDate'] = setDate();
            }
        });
    };
}