Interface IController

Called on each turn of the digest cycle. Provides an opportunity to detect and act on changes. Any actions that you wish to take in response to the changes that you detect must be invoked from this hook; implementing this has no effect on when $onChanges is called. For example, this hook could be useful if you wish to perform a deep equality check, or to check a Date object, changes to which would not be detected by Angular's change detector and thus not trigger $onChanges. This hook is invoked with no arguments; if detecting changes, you must store the previous value(s) for comparison to the current values.

Called whenever one-way bindings are updated. The onChangesObj is a hash whose keys are the names of the bound properties that have changed, and the values are an IChangesObject object of the form { currentValue, previousValue, isFirstChange() }. Use this hook to trigger updates within a component such as cloning the bound value to prevent accidental mutation of the outer value.

Called on a controller when its containing scope is destroyed. Use this hook for releasing external resources, watches and event handlers.

Called on each controller after all the controllers on an element have been constructed and had their bindings initialized (and before the pre & post linking functions for the directives on this element). This is a good place to put initialization code for your controller.

Called after this controller's element and its children have been linked. Similar to the post-link function this hook can be used to set up DOM event handlers and do direct DOM manipulation. Note that child elements that contain templateUrl directives will not have been compiled and linked since they are waiting for their template to load asynchronously and their own compilation and linking has been suspended until that occurs. This hook can be considered analogous to the ngAfterViewInit and ngAfterContentInit hooks in Angular 2. Since the compilation process is rather different in Angular 1 there is no direct mapping and care should be taken when upgrading.