angular input variable code example

Example 1: how to make input in angular optional

export class ChildComponent {

    @Input() showName?: boolean;

    constructor() { }

}

Example 2: input set variable angular

@Component({
    selector: 'my-component',
    template: '<h3> My component </h3>'
})

export class MyComponent {
    @Input()
    set name(str: string) {
        this.service.setName(str);
        console.log(str);
    }
}