Class IfTruthyDirective<Data, Parameters>

constructor

• new IfTruthyDirective<Data, Parameters = any>(
      templateRef: TemplateRef<IfTruthyDirectiveTemplateContext<Data>>,
      viewContainerRef: ViewContainerRef,
      cdr: ChangeDetectorRef,
  ): IfTruthyDirective<Data, Parameters>

  Type Parameters

  • Data
  • Parameters = any

  Parameters

  • templateRef: TemplateRef<IfTruthyDirectiveTemplateContext<Data>>
  • viewContainerRef: ViewContainerRef
  • cdr: ChangeDetectorRef

  Returns IfTruthyDirective<Data, Parameters>

method

parameters

trackBy

ngOnChanges

• ngOnChanges(changes: SimpleChanges): void

  A callback method that is invoked immediately after the default change detector has checked data-bound properties if at least one has changed, and before the view and content children are checked.

  Parameters

  • changes: SimpleChanges

    The changed properties.

  Returns void

StaticngTemplateContextGuard

• ngTemplateContextGuard<T>(
      dir: IfTruthyDirective<T>,
      ctx: any,
  ): ctx is IfTruthyDirectiveTemplateContext<T>

  Asserts the correct type of the context for the template that NgForOf will render.

  The presence of this method is a signal to the Ivy template type-check compiler that the NgForOf structural directive renders its template with a specific context type.

  Type Parameters

  • T

  Parameters

  • dir: IfTruthyDirective<T>
  • ctx: any

  Returns ctx is IfTruthyDirectiveTemplateContext<T>