Ember如何在不指定hbs动作的情况下触发动作

Question

In my Ember app component my-component.hbs, I have

{{#my-grid gridInitialized="gridInstantiated" }}

Now in my-component.js, I have it defined as action below;

actions: {
    gridInstantiated: function (myGrid) {       
    }
}

How/Why does the above syntax for action work ? Specifically

1. "gridInstantiated" is not defined as normal property in my-component.js
2. In the hbs, it is defined without the "action" keyword

Just wanted to know how it works given the above 2 points ?

*********EDITS************

Just to add, I have the below code on my-grid component init call;

this.sendAction('gridInitialized', Ember.$.proxy(this, function () {
    this.fetchData();
}));

Answer 1

In classic action, for triggering the action they will use this.sendAction("actionName") this will look for the actionName function in action hash call that function with corresponding context.

Its very well explained in https://embermap.com/notes/26-a-note-on-actions