问题
Child component property update is triggering all the parent component willUpdate,willRender,didUpdate and didRender life cycle hook methods. but I just updated property which is visible only the child component, It has nothing to do with parent component.
Twiddle to check.
Twiddle to check with powerselect - when mouse over dropdown option it's triggering the all of its parent component willUpdate,willRender,didUpdate and didRender life cycle hook methods.
Is there any way I can avoid this behavior?. [I tried with/without this._super(...arguments)]
PS: The reason is, I am doing some heavy operation in didRender hook of the parent component I don't want to run this unnecessarily. (One solution I can think of is manually checking for the specific property alone is changed or not by myself and run the heavy operation upon the condition).
来源：https://stackoverflow.com/questions/44606056/ember-parent-child-component-how-to-avoid-unnecessary-life-cycle-hook-from-trig