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

in angular4 foreach like that. try this.

 selectChildren(data, $event) {
      let parentChecked = data.checked;
       this.hierarchicalData.forEach(obj => {
          obj.forEach(childObj=> {
            value.checked = parentChecked;
         });
      });
    }