如何知道何时有角。js消化循环是开始(还是结束)?

I have an Angular.js app that performs a large set of accounting-type calculations (revenue, costs, profit, etc) across a complex object model. A change to any part of the object model requires all of the calculations to be re-executed. Furthermore, many of the changes to the object model can be made directly from my templates using bindings - there's no need for a controller to intermediate.I have an Angular.js app that performs a large