Angular 2: Component Interaction, optional input parameters

Question

I have an implementation where parent wants to pass certain data to child component via the use of @Input parameter available at the child component. However, this

Answer 1

You have two options here.

1) You can use an *ngIf on the child in case the child does not need to be displayed when its Input is empty.

 
     //passing parameter
     //not willing to passing any parameter

2) In case the child should get displayed without any input, you can use a modified setter to check for the presence of input variables`

In the child.ts:

private _optionalObject: any;
@Input()
set optionalObject(optionalObject: any) {
    if(optionalObject) this._optionalObject = optionalObject;
}
get optionalObject() { return this._optionalObject; }