angular5子组件值变动，父组件监听改变回调

子组件

import { Component, Input, Output,EventEmitter } from '@angular/core';
 @Input() crrunKm: any;
 @Output() getCrrunKmChange = new EventEmitter<any>();
 this.getCrrunKmChange.emit(newVaule);

 父组件

<parent-compononet  (getSearchStatusChange)="myCallback($event)" #modelNo></parent-compononet>