One common issue I encountered involved the $scope
field used for the ng-src
attribute within an <img>
:
$scope.imageDataUrl
To initialize this field, I utilized the following code:
$scope.myJsWrapper = new MyJsWrapper();
$scope.myJsWrapper.getImageUrl(function (imageDataUrl) {
$scope.imageDataUrl = imageDataUrl;
});
The external JS function responsible for this process is outlined below:
function MyJsWrapper() {
this.getImageUrl = function (withImage) {
thirdPartyJsFile.getData().then(function (data) {
var imageDataUrl = thirdPartyJsFile.getDataUrl(data, "image/png");
if (withImage) {
withImage(imageDataUrl);
}
});
}
}
This approach might be convoluted, but it was necessitated by the requirements of the third-party application. The main issue arises from Angular's failure to detect changes in the imageDataUrl
field, resulting in the image not being updated. Though I attempted using $scope.$watch
for monitoring changes, it failed to trigger as expected. Interestingly, the field only updates when browser scrolling or clicking occurs (including the $scope.$watch
). Hence, my primary question pertains to why Angular fails to recognize these changes and what measures must be taken for correction.