此方法采用的是没有路由的方式；
html5 代码：
<div [hidden]="flag">
<li class="music-list-datails">热门</li>
<li class="music-list-datails" *ngFor="let c of category" [class.selected]="c === selectedc" (click)="onSelect(c)">{{c.category_name}}</li>
</div> <div *ngIf="selectedc">
<li class=" swiper-slide music-list-datails " (click)="goback()">返回上一级</li>
<li class="swiper-slide music-list-datails " *ngFor="let audio of selectedc ">{{audio.tag_name}}</li>
</div>
ts代码：
ts代码：
errorMessage: string;
category: Category[];
selectedc: Tag[];
flag;
constructor(private fmService: FMService, private location: Location) { }
ngOnInit() {
this.getCategoryList();
}
getCategoryList() {
this.fmService.getCategoryList().then(
category => {
this.category = category;
},
error => this.errorMessage = <any>error
)
} onSelect(c): void {
this.fmService.getAudiobook(c.id).then(
tag => {
this.selectedc = tag;
this.flag = true;
},
error => this.errorMessage = <any>error
)
}