javascript - AngularJs 无法看到输入的更新值并设置 ng-invalid

Question

Datepicker 获取日期并将其放入input 字段中。输入标记为 required 但 AngularJS 无法看到更改并将其标记为有效。为什么？

HTML

<div class="form-group" ng-class="{ 'has-error': myForm.inputDatetimeStart.$invalid }">
    <label for="datetimepicker_start" class="col-sm-3 control-label">Start date and time: </label>
    <div class="col-sm-8">
        <input class="form-control" name="inputDatetimeStart" ng-model="datetime_start" id="datetimepicker_start" type="text" required>
    </div>
</div>

JS

 angular.module('myApp', ['ajoslin.promise-tracker', 'ngRoute'])
     .controller('myCtrl', function ($scope, $http, $log, promiseTracker, $timeout){
       jQuery('#datetimepicker_start').datetimepicker({   });
       ...

     }

Answer 1

尝试使用

$scope.$watch('datetime_start', function () { 
    $scope.$apply();
})

这将使摘要循环发生。