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General Tech Bugs & Fixes 2 years ago
Posted on 16 Aug 2022, this text provides information on Bugs & Fixes related to General Tech. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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I don't understand how to use $scope.$watch and $scope.$apply. The official documentation isn't helpful.
$scope.$watch
$scope.$apply
What I don't understand specifically:
I tried this tutorial, but it takes the understanding of $watch and $apply for granted.
$watch
$apply
What do $apply and $watch do, and how do I use them appropriately?
There are $watchGroup and $watchCollection as well. Specifically, $watchGroup is really helpful if you want to call a function to update an object which has multiple properties in a view that is not dom object, for e.g. other view in canvas, webGL or server request. Here, the documentation link.
$watchGroup
$watchCollection
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