NgContentRef class

Represents a reference to an <ng-content> element.

This can be used to query whether an <ng-content> has any projected nodes. Users can access this class via a direct reference in the template, or a view query.

@Component(
  selector: 'comp',
  template: '''
    <ng-content #projectedContent></ng-content>
    <div *ngIf="!projectedContent.hasContent">
      There was no projected content. Here is some default content!
    </div>
  ''',
)
class FooComponent {
  @ViewChild(NgContentRef)
  NgContentRef child;
}

Constructors

NgContentRef(RenderView _renderView, int _index)

Properties

hasContent → bool

Returns whether this has any projected nodes.

no setter

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited