Search list of names only

in file HTML

<ion-searchbar placeholder="Username" type="text" (ionInput)="getTopics($event)" [showCancelButton]="shouldShowCancel" (ionCancel)="onCancel($event)"></ion-searchbar>  
            <ion-item *ngFor="let item of items">
                    <ion-avatar item-left="item-left">
                        <img [src]="item.avatar"></ion-avatar>
                        <ion-label>  {{item.name}}</ion-label> 
                    </ion-item>

in file TS

export class AddChatPage {
  items: any[];
 constructor(public navCtrl: NavController,
     public navParams: NavParams   ) {  
      this.generateTopics();
} 

generateTopics() {   
 this.items = [
  { name: 'amr mohy', avatar: '/assets/imgs/6.png'  }, 
  { name: 'mando fady', avatar: '/assets/imgs/5.png'  }   
  ]  
 }

 getTopics(ev: any) {
    this.generateTopics(); 
    let serVal = ev.target.value;
    if (serVal && serVal.trim() != '') {
        this.name=  this.name.filter((topic) => {
        return (topic.toLowerCase().indexOf(serVal.toLowerCase()) > -1);
      })
    }
  }

}