Angular ForEach in Angular4/Typescript?

Question

I see many answers about using ngFor when I search for this, but I understand ngFor. I\'m asking about the angular.forEach() constructor used in my Angular 1 contr

Answer 1

you can try typescript's For :

selectChildren(data , $event){
   let parentChecked : boolean = data.checked;
   for(let o of this.hierarchicalData){
      for(let child of o){
         child.checked = parentChecked;
      }
   }
}