How to measure the performance of AngularJS code before and after optimization?

Question

Angular

Hello! Yesterday a post appeared on Habré , after reading which, I wanted to try to make some changes to a small code to improve performance. In fact, I just want to see in numbers (milliseconds, number of watches, etc.) the difference before and after any changes in a real example. How to measure this, is it automated or do I need to manually take measurements and output to the console?

Answer 1

Browser profiler.
I haven't read the article, but I suspect it's about minor optimizations.
Pretty bad advice, you can only do this inside an isolated directive and only if you know what you are doing.