ngRef attribute tells AngularJS to assign the controller of a component (or a directive) to the given property in the current scope. It is also possible to add the jqlite-wrapped DOM element to the scope.
If the element with
ngRef is destroyed
null is assigned to the property.
Note that if you want to assign from a child into the parent scope, you must initialize the target property on the parent scope, otherwise
ngRef will assign on the child scope. This commonly happens when assigning elements or components wrapped in
ngRepeat. See the second example below.
<ANY ng-ref="string" [ng-ref-read="string"]> ... </ANY>
|ngRef|| || |
property name - A valid AngularJS expression identifier to which the controller or jqlite-wrapped DOM element will be bound.
| ngRefRead |
| || |
read value - The name of a directive (or component) on this element, or the special string
This example shows how the controller of the component toggle is reused in the template through the scope to use its logic.
This example shows how
ngRef works with child scopes. The
myWrapper components are assigned to the scope of
myRoot, because the
toggles property has been initialized. The repeated
myToggle components are published to the child scopes created by
ngIf behaves similarly - the assignment of
myToggle happens in the
ngIf child scope, because the target property has not been initialized on the
myRoot component controller.
© 2010–2018 Google, Inc.
Licensed under the Creative Commons Attribution License 4.0.