If your AngularJS Datepicker is not binding the selected date to the model correctly, the issue might be due to:
- Incorrect
ng-model
usage - Format mismatches between the Datepicker and AngularJS model
- Browser compatibility issues
- Not triggering AngularJS digest cycle (
$scope.$apply()
)
Let’s go step by step to fix the issue.
Step 1: Understanding the Problem
Common Incorrect Approach
<input type="date" ng-model="selectedDate">
<p>Selected Date: {{ selectedDate }}</p>
🔴 Issue:
- Sometimes, the value does not update in
$scope.selectedDate
. - The selected date might appear as a string instead of a Date object.
- The AngularJS
$scope
might not detect the change automatically.
Step 2: Correcting the Approach
Method 1: Use ng-change
to Ensure Model Updates
Modify the input to manually trigger model updates:
<input type="date" ng-model="selectedDate" ng-change="updateDate(selectedDate)">
<p>Selected Date: {{ selectedDate | date:'yyyy-MM-dd' }}</p>
Controller Code
var app = angular.module("myApp", []);
app.controller("myController", function ($scope) {
$scope.selectedDate = new Date(); // Default value
$scope.updateDate = function (date) {
console.log("Date selected:", date);
};
});
Why This Works?
ng-change="updateDate(selectedDate)"
ensures that any change triggers$scope
updates.- Using
{{ selectedDate | date:'yyyy-MM-dd' }}
correctly formats the displayed date.
Method 2: Handling Date Format Issues
If the model stores the date as a string instead of a Date object, ensure conversion:
$scope.selectedDate = new Date($scope.selectedDate);
Or modify the HTML to convert the date properly:
<p>Selected Date: {{ selectedDate ? (selectedDate | date:'yyyy-MM-dd') : 'No Date Selected' }}</p>
Why This Works?
- Prevents errors when
selectedDate
is undefined or null.
Step 3: Fixing Datepicker in UI Frameworks
Using Bootstrap Datepicker
If using Bootstrap Datepicker, the issue may arise due to missing ng-model
binding. Use datepicker-popup
instead:
<input type="text" class="form-control" uib-datepicker-popup="yyyy-MM-dd" ng-model="selectedDate" is-open="opened" ng-click="openDatepicker()" />
Controller Code
$scope.opened = false;
$scope.openDatepicker = function () {
$scope.opened = true;
};
Why This Works?
uib-datepicker-popup="yyyy-MM-dd"
ensures format compatibility.is-open="opened"
allows clicking to open the Datepicker.