小编Elk*_*kin的帖子

这是我的演示代码:

//Imports and decorators up here for Angular 2

export class ProductsListComponent {

  products = [
    { name: "A", color: "Blue", size: 50 },
    { name: "B", color: "Blue", size: 60 },
    { name: "C", color: "Black", size: 70 }
  ];

  filters = {
    colors: ["Blue", "Black"],
    sizes: [70, 50]
  };

  //This is my first approach but just works for the colors array inside filters object  
  //and i have no ideia how to filter sizes too
  filterProducts() {
    let results …

在angular.json中导入样式和在styles.css中导入之间有什么区别？

导入angular.json

导入styles.css

希望能很好地解释我的问题。提前致谢。

我通过以下命令用2条路线构建了一个简单的angular应用程序：

ng build --aot --prod --base-href ./

然后我打开index.html位于dist文件夹中的文件，应用程序运行，但是路由不起作用，并且在控制台上收到以下警告：

希望能很好地解释我的问题。提前致谢。

服务演示代码:

  public class Login : UserNamePasswordValidator
    {
        public override void Validate(string userName, string password)
        {
            if (new ProjectContext().Users.Count(x => x.Username == userName && x.Password == password) == 0)
            {
                throw new FaultException("Invalid login");
            }
        }  
    }

客户代码演示:

internal bool LoginOnWcf(string address, string password) 
        {
            try
            {
                service.ClientCredentials.ServiceCertificate.Authentication.CertificateValidationMode = System.ServiceModel.Security.X509CertificateValidationMode.None;
                service.ClientCredentials.UserName.UserName = address;
                service.ClientCredentials.UserName.Password = password;
                user = service.GetUserById(address);
                return true;
            }
            catch (FaultException ex)
            {
                MessageBox.Show(ex.Message);
                return false;
            }
        }

Web.config演示:

<behaviors>
      <serviceBehaviors>
        <behavior name="defaultProfile">
          <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" />
          <serviceDebug …

我正在学习NgRx,但我不明白为什么实体选择器触发动作.我一直在寻找原因,但我没有找到任何东西.也许我错过了一些NgRx/Entity的基础知识.

这是我的演示代码:

selectors.ts

export const selectHeroState: MemoizedSelector<object, HeroesState> = createFeatureSelector<HeroesState>('heros');
export const selectHeroes: (state: object) => Hero[] =  heroAdapter.getSelectors(selectHeroState).selectAll;

component.ts

ngOnInit() {
 //this.store$.dispatch(new GetAll()); I thought this line of code was nescessary to fetch all data from store... 
 this.heroes$ = this.store$.select(selectHeroes); //but i just need this one as it triggers the Get All action
}

我希望能很好地解释我的问题.提前致谢.

下一个代码...

<div *ngFor="let parent of parents">
    <div *ngFor="let child of parent.children">{{child.name}}</div>
</div>

...生成下一个html。

<div>
    <div>Mary</div>
</div>
<div>
   <div>John</div>
</div>

我的目标是产生一般的single div，如下所示：

<div>Mary</div>
<div>John</div>

我希望已经很好地解释了我的问题。提前致谢。