Event handlers not triggering in unit tests
When event handlers are not triggering in AngularJS unit tests, it’s usually due to a mismatch between how the test is simulating events and how Angular binds to them. This….
Tag: $digest
Debugging slow $digest cycles in AngularJS
In AngularJS applications, the $digest cycle is the process through which the framework checks for changes in the model and updates the view accordingly. It is crucial to the functioning….
Using $scope.$evalAsync() for async updates
In AngularJS, $scope.$evalAsync() is a powerful method used to schedule an asynchronous update to the scope model. It allows you to evaluate expressions and update the scope in a way….
How to test custom directives?
Custom directives are a core feature in AngularJS that allow developers to create reusable UI components. When writing unit tests for directives, we need to ensure that: To test AngularJS….
How does the $apply() method work?
The $apply() method in AngularJS is used to manually trigger a digest cycle ($digest) when changes occur outside AngularJS’s scope, ensuring the UI updates correctly. By default, AngularJS automatically triggers….
Avoiding excessive watchers in AngularJS
In AngularJS, excessive watchers can slow down an application due to frequent digest cycles. Each watcher adds a performance cost because AngularJS continuously checks for changes in watched variables. This….
Common AngularJS runtime errors and how to fix them
AngularJS is a powerful framework, but developers often encounter runtime errors due to incorrect syntax, scope issues, dependency injection problems, or other misconfigurations. Below are some of the most common….
Avoiding unnecessary watchers for better performance
AngularJS relies heavily on watchers ($watch, $watchGroup, and $watchCollection) to track changes in data and update the UI accordingly. However, excessive or unnecessary watchers can lead to performance issues, especially….
Optimizing performance of animations
Why Optimize Animations? Poorly optimized animations can slow down your app, causing: Janky transitions High CPU & memory usage Low frame rates (FPS drops) By optimizing animations, you ensure smooth….
Using track by in ng-repeat for improved performance
What You’ll Learn Why ng-repeat can slow down performance How track by improves efficiency Best practices for using track by 1️⃣ Understanding ng-repeat Performance Issues AngularJS uses ng-repeat to loop….