@Watch装饰器的回调执行顺序

@Component  
struct TabComponent {  
  private title: string = ''  
  private index: number = 0  
  @Prop @Watch('onChange') state: string  
  
  build() {  
    Column() {  
      Text(this.title)  
    }  
  }  
  
  onChange() {  
    console.log('test', this.index, this.state)  
  }  
}

TabContent() {  
  TabComponent({  
    title: this.tabs[0],  
    index: 0,  
    state: this.tabState0  
  })  
}.tabBar(this.tabBuilder(this.tabs[0], 0))  
  
TabContent() {  
  TabComponent({  
    title: this.tabs[1],  
    index: 1,  
    state: this.tabState1  
  })  
}.tabBar(this.tabBuilder(this.tabs[1], 1))

this.tabState1 = 'hide'        this.tabState0 = 'show'