Diferencia entre revisiones de «Xulla Angular»
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* Crear projecte: ng new angular-projecte | * Crear projecte: ng new angular-projecte | ||
== Reactivitat == | |||
* Interpolació normal: {{}} | |||
* Atributs: <img [src]="product.imageUrl" alt=""> | |||
* Estils: | |||
<syntaxhighlight lang="html" style="font-family:monospace"> | |||
<td [ngStyle]="{'background-color': isEven?'red':'green'}">...</td> | |||
<td [ngStyle]="{'width.px': width}">...</td> <!--width és una variable de TS--> | |||
<td [ngStyle]="styleObject">...</td> <!-- Variable de TS --> | |||
<td [ngClass]="{'even': isEven, 'last': isLast}"></td> | |||
<td [ngClass]="{'even': isEven, 'last active': isLast}"></td> | |||
<td [ngClass]="classObject"></td> <!-- Variable de TS--> | |||
<p [ngStyle]="{'font-size': tamano+'px'}">Hola Mundo</p> | |||
<p [ngStyle]="{'font-size.px': tamano}">Hola Mundo</p> | |||
<p [style.fontSize.px]="tamano">Hola Mundo</p> | |||
<p [ngClass]="clase">Hola Mundo</p> | |||
<p [ngClass]="[clase, claseParrafo ]">Hola Mundo</p> | |||
<p [ngClass]="{'text-danger': danger, 'text-info': !danger}">Hola Mundo</p> | |||
</syntaxhighlight> | |||
* Bidireccional: [(ngModel)] <input type="text" [(ngModel)]="filterSearch" class="form-control" name="filterDesc" id="filterDesc" placeholder="Filter..."> (Cal importar FormModule en app.module.ts) | |||
* Esdeveniments: (click), (mouseenter),(keypress)... (click)="toggleImage()" | |||
== Directives == | |||
* *ngIF <div style="width: 400px;" *ngIf="mostrar"> | |||
* *ngFor <li *ngFor="let cita of citas; let i = index">{{ i }} {{ cita }}</li> (index, first, last, even, odd) | |||
* else ngSwitch i exemple de combinacions: | |||
<syntaxhighlight lang="html" style="font-family:monospace"> | |||
<div *ngIf="show; else elseBlock">La condición es verdadera</div> | |||
<ng-template #elseBlock>La condición es falsa</ng-template> | |||
<span [ngSwitch]="property"> | |||
<span *ngSwitchCase="'val1'">Value 1</span> | |||
<span *ngSwitchCase="'val2'">Value 2</span> | |||
<span *ngSwitchCase="'val3'">Value 3</span> | |||
<span *ngSwitchDefault>Other value</span> | |||
</span> | |||
<ng-container *ngFor="let person of persons"> <!-- Desaparece --> | |||
<ng-container *ngIf="person.age >= 18"> <!-- Desaparece --> | |||
<p>{{person | json}}</p> <!-- Sólo quedará este elemento --> | |||
</ng-container> | |||
</ng-container> | |||
</syntaxhighlight> | |||
== Rutes == | == Rutes == | ||
Revisión del 11:25 23 feb 2022
Instal·lar
sudo npm install -g @angular/cli [--force] ng new my-app cd my-app ng serve -o
CLI
- Component: ng g component my-new-component
- Directive: ng g directive my-new-directive
- Pipe: ng g pipe my-new-pipe
- Service: ng g service my-new-service
- Class: ng g class my-new-class
- Interface: ng g interface my-new-interface
- Enum: ng g enum my-new-enum
- Module: ng g module my-new-module
- Guard: ng g guard my-new-guard
- Afegir biblioteques: ng add @angular/material
- Actualitzar: ng update --all
- Compilar: ng build [--prod]
- Crear projecte: ng new angular-projecte
Reactivitat
- Interpolació normal: {{}}
- Atributs: <img [src]="product.imageUrl" alt="">
- Estils:
<td [ngStyle]="{'background-color': isEven?'red':'green'}">...</td>
<td [ngStyle]="{'width.px': width}">...</td> <!--width és una variable de TS-->
<td [ngStyle]="styleObject">...</td> <!-- Variable de TS -->
<td [ngClass]="{'even': isEven, 'last': isLast}"></td>
<td [ngClass]="{'even': isEven, 'last active': isLast}"></td>
<td [ngClass]="classObject"></td> <!-- Variable de TS-->
<p [ngStyle]="{'font-size': tamano+'px'}">Hola Mundo</p>
<p [ngStyle]="{'font-size.px': tamano}">Hola Mundo</p>
<p [style.fontSize.px]="tamano">Hola Mundo</p>
<p [ngClass]="clase">Hola Mundo</p>
<p [ngClass]="[clase, claseParrafo ]">Hola Mundo</p>
<p [ngClass]="{'text-danger': danger, 'text-info': !danger}">Hola Mundo</p>
- Bidireccional: [(ngModel)] <input type="text" [(ngModel)]="filterSearch" class="form-control" name="filterDesc" id="filterDesc" placeholder="Filter..."> (Cal importar FormModule en app.module.ts)
- Esdeveniments: (click), (mouseenter),(keypress)... (click)="toggleImage()"
Directives
- *ngIF
- *ngFor
- Plantilla:I Plantilla:Cita (index, first, last, even, odd)
- else ngSwitch i exemple de combinacions:
<div *ngIf="show; else elseBlock">La condición es verdadera</div>
<ng-template #elseBlock>La condición es falsa</ng-template>
<span [ngSwitch]="property">
<span *ngSwitchCase="'val1'">Value 1</span>
<span *ngSwitchCase="'val2'">Value 2</span>
<span *ngSwitchCase="'val3'">Value 3</span>
<span *ngSwitchDefault>Other value</span>
</span>
<ng-container *ngFor="let person of persons"> <!-- Desaparece -->
<ng-container *ngIf="person.age >= 18"> <!-- Desaparece -->
<p>{{person | json}}</p> <!-- Sólo quedará este elemento -->
</ng-container>
</ng-container>
Rutes
Fitxer: app-routing.module.ts
Etiqueta: <router-outlet>
Rutes amb #: imports: [RouterModule.forRoot(routes, { useHash: true })],
Exemple:
const routes: Routes = [
{path: 'home', component: HomeComponent},
{path: 'planets', canActivate: [AuthGuard], component: PlanetListComponent},
{path: 'suns', canActivate: [AuthGuard], component: SunComponent},
{path: 'planet/:id', canActivate: [AuthGuard], component: PlanetDetailComponent},
{path: 'planet/edit/:id', canActivate: [AuthGuard],
resolve: {planet: PlanetResolveService},
component: PlanetEditComponent},
{path: 'login', component: LoginComponent},
{path: '**', pathMatch: 'full', redirectTo: 'home'}
];
Cridar a les rutes: <a class="nav-link active" aria-current="page" [routerLink]="['home']" [routerLinkActive]="['active']">Home</a>
Cridar a les rutes per codi:
import { Router } from '@angular/router';
constructor( private router: Router ) {}
detailsProduct(id: number): void{ this.router.navigate(['/product', id]); }
Servicis HTTP
En app.module.ts, en imports: HttpClientModule i importat de: import { HttpClientModule } from '@angular/common/http';
Exemple bàsic:
constructor(private http: HttpClient) { }
getProducts(): Observable<Product[]>{
return this.http.get<{products: Product[]}>(this.productURL).pipe(
map(response => response.products)
);
}