AngularJS Performance
AngularJS 
Learn how to write highly performant AngularJS apps and master the internal workings of Angular. From common performance bottlenecks through to understanding the $digest cycle, $$watchers, supercharge your ng-repeats and async queues to gain massive performance.
Author: Todd Motto 
Google Developer Expert
Superfast renders with batching • 13:18
Superfast renders with batching - Closed Captions (subtitles)
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Topics you'll learn
- Understanding $digest cycle
- $rootScope and $scope inheritance
- $watch vs $watchCollection
- $applyAsync vs $evalAsync
- Superfast renders with batching
- Performance repeat filtering
- $digest control with ngModelOptions
- Batching $http into single $digests
- Running DI strict mode
- Avoid memory leaks with $destroy
I can't think of any Angular course training that I trust to be more accurate, and promote the best practices, than Ultimate Courses.
Jules Kremer
Course overview
Source code
Readme
Understanding Angular
Understanding the $digest cycle
21:00Diving into $digest and $apply
09:06$rootScope and $scope inheritance
08:28
Watchers, collections and async queues
What creates a $$watcher
08:25$watch vs $watchCollection
15:16$applyAsync vs $evalAsync
11:18
Superfast ng-repeats
Superfast renders with batching
13:18Performance repeat filtering
07:54Track-by expressions for minimal repaints
12:43
Native Angular performance tuning
ng-if versus ng-show
07:19$digest control with ngModelOptions
12:08Limiting template expressions
05:12Batching $http into single $digests
05:01
Tips and tricks
Running DI strict mode
13:44Disabling hidden .data() and DOM mutation
08:42Avoid memory leaks with $destroy
12:40
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An immense job breaking things down into simple concepts. I would strongly recommend Ultimate Courses.
Houssein Djirdeh
Self-paced, comprehensive, real examples from beginning to end, clear and concisely brilliant.
Jacob Cheriathundam
Todd's Angular courses are one of the best online trainings that can be found. A+.
John Oswalt
I’ve achieved the structure and organisation that is difficult to get on your own. Excellent.
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The courses are incredible. You've opened the door for me to build real Angular apps.
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A fast track to becoming a super solid Angular developer. Detailed, easy to understand, brilliant.
Mag Leahy
This course is the best resource for learning Angular. The Angular Pro course is incredible.
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Fantastic courses explained incredibly well. Very easy to follow and understand concepts. 10/10.
Nicolas Telfer
Landed my first job after taking these courses, not sure I'd have made it otherwise.
Mateusz Sapielak
A must have for anyone wanting to become an Angular developer. I learned incredible amounts!
Mohammad Aljaber
You've helped me grasp architecture of Angular apps, and the way it should really be done.
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Todd condenses all his hard earned knowledge into a time-saving learning process.
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The best place to get started with Angular, and go straight to the advanced material.
Zhentain Wan
Todd's in depth knowledge of Angular was fantastic, and the TypeScript explanations are superb.
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Extremely helpful in breaking down concepts into something beginners can understand.
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Goodbye books and lectures, hello Ultimate Courses. Intuitive, enlightening, and refreshing.
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The best resource for anyone wanting to get started with Angular, and go way beyond.
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The content has been well thought out, everything fits together perfectly.
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Everything you could to learn for Angular. The courses ask "why?", and responds with the answers!
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I've come up to speed immediately. I was lost and confused before this course, a brilliant job.
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I attempted other courses before these, and Ultimate Courses is way ahead and incomparable.
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Hands down the best courses available. Daunting concepts aren't scary anymore, they're a breeze.
Vatsal Pande
Ultimate Courses is a fantastic way for you and your team to start writing quality code.
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Very few break down concepts in such a digestable way. Full of vital real-world techniques.
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Ultimate Courses gives you an edge. Bursts of knowledge that really step up your game.
Simon Dufour
Crystal clear concepts, meticulously designed examples and projects. Fantastically valuable.
Yiling Lu
The best Angular instructors out there with unrivalled knowledge. First-class Angular courses.
Sebastien Pelletier
The essentials of architecture, combined with organisation and advanced tricks.
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If you want to finally understand Angular and TypeScript, you're in the right place.
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The Angular courses are the best you'll find. They've taken our skills to the next level.
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Absolutely love these courses, I've built my first proper app. Recommended to all.
Simon Lewis
The real ultimate guide to Angular. Thank you for all your contributions to the community.
Sherry List
The Angular courses have been indispensable for me getting things done, the right way.
Stephen Smith
Hands down best start to finish NGRX course available. 10/10.
Alexander Torres
The first course I've ever watch to the end. I've immediately grasped NGRX Store and Effects!
Ben Dalton
This course is incredible and laid everything out for me in a few hours. I've fallen in love with NGRX!
Jan van Braeckel
There's no material available like this online all in one place, fantastic.
Dick Swart
