Ember.merge()

Merge the contents of two objects together into the first object.

Ember.merge({ first: 'Tom' }, { last: 'Dale' }); // { first: 'Tom', last: 'Dale' }
var a = { first: 'Yehuda' };
var b = { last: 'Katz' };
Ember.merge(a, b); // a == { first: 'Yehuda', last: 'Katz' }, b == { last: 'Katz' }