HarmonyOS 组件初始化参数

从API12开始，在@ComponentV2装饰的自定义组件中支持使用@Param装饰器。也可以使用@prop，示例参考如下：

@Component
struct HeaderView {
  @Prop mobileNo: string = '11';
  closeMsg?: string = '333';
  isShowBack?: boolean = true;
  isShowClose?: boolean = false;
  isShowMore?: boolean = false;
  @Prop title?: string | Resource = '';
  onBackClick = () => {
  };
  onMoreClick = () => {
  };
  onCloseClick = () => {
  };
  click? = (data: number) => {
  };

  build() {
    Column() {
      Text(this.mobileNo)
      Text(this.title)
      Text(this.closeMsg)
      Text('点击子组件').onClick(() => {
        if (this.click != undefined) {
          this.click(123);
        }
      })
    }
  }
}

@Entry
@Component
struct Index {
  clickFunc(data: number) {
    console.log(data.toString())
  }

  build() {
    Column() {
      Text('parents')
      HeaderView({ mobileNo: '123456', title: '标题测试', click: (data: number): void => this.clickFunc(data) })
    }
  }
}