Ember.getProperties()

To get multiple properties at once, call Ember.getProperties with an object followed by a list of strings or an array:

Ember.getProperties(record, 'firstName', 'lastName', 'zipCode');
// { firstName: 'John', lastName: 'Doe', zipCode: '10011' }

is equivalent to:

Ember.getProperties(record, ['firstName', 'lastName', 'zipCode']);
// { firstName: 'John', lastName: 'Doe', zipCode: '10011' }