angular-draggable-droppable | Observable powered drag and drop | Widget library
kandi X-RAY | angular-draggable-droppable Summary
kandi X-RAY | angular-draggable-droppable Summary
Observable powered drag and drop for angular 12.0+.
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QUESTION
I am using a 3rd Party library (angular-draggable-droppable) in an ionic on angular project. As ionic caches pages, the angular component stays in the Dom but with a lower z-index value. It seems that, when having the same page with different z-indexes, the onDrop event is triggered twice, one for each element, as they both are in the dom. My questions are:
- Do I need to make sure that event-listeners are properly removed from the dom, when using a 3rd party library.
- How do I do that (removing/disabling all event-listeners of a cached page) cleanly.
- Is there any suggestions, to similar cases (I have a workaround, which I don't like, shortly having a flag (active) in the page, which I set to false in the hook IonicDidLeave and in every event-handler I check whether its active and then do the expected handling).
- Do I need to find another library, that handles this scenario?.
ANSWER
Answered 2021-Sep-13 at 12:18Event handlers will be removed and cleaned up when the DOM element is garbage collected as part of the garbage collection process in modern browsers. In your case since ionic caches component instead of removing, you need to manually remove by removeListener
method of javascript.
QUESTION
I have an Angular 6 project I would like to upgrade to Angular 10, but I have read it’s best to do it one major version at a time, so I am trying to get it to 7.3 for now. I have followed all the steps on update.angular.io, but I am beginning to think it’s not a very complete guide. This question will be broken up into several sub-questions:
- After upgrading Angular Core and CLI (ng update @angular/cli@7 @angular/core@7), I tried to run “ng serve”, but then get these compile errors:
...
ANSWER
Answered 2020-Oct-23 at 08:28I was able to fix the problem by upgrading some of the core dependencies manually like this:
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