我如何导航到登录页面时隐藏/显示导航栏按钮。
Ex-在我的应用程序组件中,我有标头组件,路由器出口和页脚组件在我的页眉组件中,我有大约5个导航按钮,例如,登录,注册,关于,联系我们等。现在,我要的是如果有人单击“登录”,那么,登录表单就在其中,当有人登录并移至仪表板页面时,页眉不应包含“登录”和“注册”选项。
Ex-再次通知标题页。下面是我的代码-
AppComponent.html
<app-header></app-header>
<router-outlet></router-outlet>
<app-footer></app-footer>
app-routing.module.ts
const routes: Routes = [
{ path: '', component: HomeComponent },
{path:'registration', component: RegistrationComponent},
{path: 'login', component: LoginComponent},
{path: 'dashboard', component: DashboardComponent},
{path: 'header', component: HeaderComponent},
];
HeaderComponent.html
<div class="navbar-nav ml-auto">
<a class="nav-item nav-link" routerLink="/login"><h4>Login</h4></a>
<a class="nav-item nav-link" routerLink="/registration"><h4>Register</h4></a>
<a class="nav-item nav-link" routerLink="/about"><h4>About</h4></a>
<a class="nav-item nav-link" routerLink="/dashboard"><h4>Dashboard</h4></a>
</div>
So, How can i hide Login, Registration option once logged in successfully
使用html。
<a *ngIf="!loggedIn()" class="nav-item nav-link" routerLink="/login"><h4>Login</h4></a>
<a *ngIf="!loggedIn()" class="nav-item nav-link" routerLink="/registration">Register</h4></a>
在您的.ts文件中。
loggedIn() {
return localstorgae.getItem("some credential you stored while user logged In") ? true : false;
}