Passing data to incoming component via custom property binding

00-outer_originating_component.ts

checked_ids: Array<number> = [40, 50];

01-outer_originating_component.html

<app-incoming-component 
                        *ngIf="show_consultants_summary_component" 
                        [consultantids]="checked_ids">  // binds data to the incoming component's custom property (consultantids in this example)
</app-incoming-component>

02-incoming_component.ts

// create a new property, type it
@Input() consultantids: Array<number> = [];

  
  
// use it in programming; caution: this will not be set in construtor. Code to use this should be in ngOnInit(){}
ngOnInit(){
  console.log(consultantids)
}