NG2- router/URL change function call

NG2- router change function call
============================
import { Router } from '@angular/router'

@Component{

Export Class Mycomponent{

Constructor(_router: Router){

 _router.events.subscribe((val) => {
                this.searchChange = '';
}

}

Ref:http://stackoverflow.com/questions/33520043/how-to-detect-a-route-change-in-angular-2