empty (dependentKey) Ember.ComputedProperty
public
A computed property that returns true if the value of the dependent property is null, an empty string, empty array, or empty function.
Example
1 2 3 4 5 6 7 8 9 10 11 | let ToDoList = Ember.Object.extend({ isDone: Ember.computed.empty( 'todos' ) }); let todoList = ToDoList.create({ todos: [ 'Unit Test' , 'Documentation' , 'Release' ] }); todoList.get( 'isDone' ); // false todoList.get( 'todos' ).clear(); todoList.get( 'isDone' ); // true |
Parameters:
-
dependentKey
String
Returns:
-
Ember.ComputedProperty
- computed property which negate the original value for property
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