Ember.js this.super() what is the purpose

Question

Lot of times i see the function

init: function() {
    return this._super();
  },

What is the purpose of this function and when to use them? Can someone explain to me practically use?

Answer 1

Calling this._super() in the init calls the init function of the superclass.

The documentation gives this example:

App.Person = Ember.Object.extend({
  say: function(thing) {
    var name = this.get('name');
    alert(name + " says: " + thing);
  }
});

App.Soldier = App.Person.extend({
  say: function(thing) {
    this._super(thing + ", sir!");
  }
});

var yehuda = App.Soldier.create({
  name: "Yehuda Katz"
});

yehuda.say("Yes"); // alerts "Yehuda Katz says: Yes, sir!"