All Ember methods and functions are defined inside of this namespace. You generally should not add new properties to this namespace as it may be overwritten by future versions of Ember.
You can also use the shorthand
Em instead of
Ember-Runtime is a framework that provides core functions for Ember including cross-platform functions, support for property observing and objects. Its focus is on small size and performance. You can use this in place of or along-side other cross-platform libraries such as jQuery.
The core Runtime framework is based on the jQuery API with a number of performance optimizations.