How to set value of a object inside an Array in EmberJS?

Question

In my ember application, I have an array of objects. I need to manipulate some object inside the array.

eg: Array: [{a:1}] then I need to change a to 2.

someArray: [{a: 1}],
didInsertElement() {
     var self = this;
     this.$('.some-element').on('scroll',function() {
         self.get('someArray')[0]['a'] = 2; // HOW TO DO THIS ?
     });
}

Also, I need the changes to be reflected in the view as well.

Note: Ember version 1.13

Answer 1

var temp = self.get('someArray').objectAt(0);
Ember.set(temp, "a", 2);

This should work

Answer 2

Ember.set(this.get('array').objectAt(index),'prop',value)