This article follows the first seven on the subject ANGULAR and deals with the language TypeScript:

• https://128mots.com/index.php/2020/02/29/angular-en-moins-de-128-mots-typescript-partie-3/
• https://128mots.com/index.php/2020/02/28/angular-en-moins-de-128-mots-partie-2/
• https://128mots.com/index.php/2020/02/27/angular-en-plus-de-128-mots-partie-1/
• https://128mots.com/index.php/2020/03/02/typescript-part4/
• https://128mots.com/index.php/2020/03/24/angular-en-moins-de-128-mots-typescript-partie-5/
• https://128mots.com/index.php/2020/03/25/angular-component/
• https://128mots.com/index.php/2020/03/27/typescript-angular-getter-setter/

Templates and interpolation

Interpolation is the incorporation of expressions into marked text. By default, interpolation uses double braces, ‘and ‘a’ as a delimiter.

<h3>Customer Number: 'numbereroClient'</h3>

Example of a directive with iteration:

<li *ngfor="let client of listeClients">'customer.name'</li>

Services:

The services allow to decouple the component of the call to a service, they are thus reusable.

ng generate customer service

import - Injectable - from '@angular/core';

@Injectable
  providedIn: 'root',
})
export class ClientService

  constructor()

}

The logic is then decoupled from the service which is injectable via the addiction injection.

Addiction injection

Example of injection of CustomerService dependency into a CustomerComponent component

import - Component, OnInit - from '@angular/core';

import 'Hero ' from '.. /hero';
import 'HeroService ' from '.. /hero.service';
import 'MessageService ' from '.. /message.service';

@Component
  selector: 'app-heroes',
  templateUrl: './heroes.component.html',
  StyleUrls:['./heroes.component.css']
})
export class ClientComponent implements OnInit

...

  getClients(): void
    this.clientService.getClients();
  }
}

Este artículo sigue a los primeros siete sobre el tema ANGULAR y trata con el lenguaje TypeScript:

• https://128mots.com/index.php/2020/02/29/angular-en-moins-de-128-mots-typescript-partie-3/
• https://128mots.com/index.php/2020/02/28/angular-en-moins-de-128-mots-partie-2/
• https://128mots.com/index.php/2020/02/27/angular-en-plus-de-128-mots-partie-1/
• https://128mots.com/index.php/2020/03/02/typescript-part4/
• https://128mots.com/index.php/2020/03/24/angular-en-moins-de-128-mots-typescript-partie-5/
• https://128mots.com/index.php/2020/03/25/angular-component/
• https://128mots.com/index.php/2020/03/27/typescript-angular-getter-setter/

Plantillas e interpolación

La interpolación es la incorporación de expresiones en texto marcado. De forma predeterminada, la interpolación utiliza llaves dobles, 'y 'a' como delimitador.

<h3>Número de cliente: 'numbereroClient'</h3>

Ejemplo de una directiva con iteración:

<li *ngfor="let client of listeClients">'customer.name'</li>

Servicios:

Los servicios permiten desacoplar el componente de la llamada a un servicio, por lo que son reutilizables.

ng generar servicio al cliente

importación - Inyectable - de '@angular/núcleo';

@Injectable
  siempre: 'raíz',
})
clase de exportación ClientService

  constructor()

}

La lógica se desacopla del servicio que es inyectable a través de la inyección de adicción.

Inyección de adicciones

Ejemplo de inyección de la dependencia CustomerService en un componente CustomerComponent

importación - Componente, OnInit - de '@angular/núcleo';

importar 'Héroe' desde '.. /héroe';
importar 'HeroService' desde '.. /hero.service';
importar 'MessageService' desde '.. /message.service';

@Component
  selector: 'app-heroes',
  templateUrl: './heroes.component.html',
  StyleUrls:['./heroes.component.css']
})
la clase de exportación ClientComponent implementa OnInit

...

  getClients(): void
    this.clientService.getClients();
  }
}

This article follows the first six on the subject ANGULAR and deals with the language TypeScript:

• https://128mots.com/index.php/2020/02/29/angular-en-moins-de-128-mots-typescript-partie-3/
• https://128mots.com/index.php/2020/02/28/angular-en-moins-de-128-mots-partie-2/
• https://128mots.com/index.php/2020/02/27/angular-en-plus-de-128-mots-partie-1/
• https://128mots.com/index.php/2020/03/02/typescript-part4/
• https://128mots.com/index.php/2020/03/24/angular-en-moins-de-128-mots-typescript-partie-5/
• https://128mots.com/index.php/2020/03/25/angular-component/

Manufacturer:

The builder is the method called to create the instance of an object

Class Point
    x: number;
    y: number;

    constructor (x: number, y: number)
        this.x x;
        this.y - y;
    }
    add (point: Point)
        return new Point (this.x - point.x, this.y - point.y);
    }
}

var p1 - new Point (30, 5);
var p2 - new Point (14, 21);
var p3 - p1.add (p2);

Optional setting:

If a setting is declared optional then all the parameters declared to its right are optional. Example of the name setting in the manufacturer.

Class Point
    x: number;
    y: number;
    name: string;

    constructor (x: number, y: number, name?:string)
        this.x x;
        this.y - y;
        this.name - name;
    }
}

Visibility:

By default the visibility of the setting is public, you can use "access modifiers" to change it.

Class Point
    private x: number;

Access modifiers can be positioned on methods, variables and properties.

Class Point
...
     private add (point: Point)
        return new Point (this.x - point.x, this.y - point.y);
    }
}

Class Point
...
    constructor (private x: number, private y: number)
...

Adding an access modifier (public/private/protected/reading only) to a builder setting will automatically assign that setting to a field of the same name.

Getter and setter:

TypeScript supports getters/setters as a way to intercept access to a member of an object.

This allows for a finer control over how a member is accessed on each object.

Const lengthMaxDuNom - 10;

Wage class
    private _nomComplet: string;

    get nameComplet(): thong
        return this._nomComplet;
    }

    name setComplet (newName: string)
        if (newName - newNom.length - lengthMaxDuNom)
            throw new Error ("Error Maximum length of the name reached, maximum length allowed - " lengthMaxDuNom);
        }
        
        this._nomComplet - newName;
    }
}

let salarie - new Salarie();
salarie.nameComplet - "Toto Hello";
if (employee.nomComplete)
    console.log (employee.nameComplete);
}

References to read:

• Website www.typescriptlang.org
• Website ultimatecourses.com
• Website en.wikipedia.org
• Website www.logicbig.com

Este artículo sigue los primeros seis sobre el tema ANGULAR y trata con el lenguaje TypeScript:

• https://128mots.com/index.php/2020/02/29/angular-en-moins-de-128-mots-typescript-partie-3/
• https://128mots.com/index.php/2020/02/28/angular-en-moins-de-128-mots-partie-2/
• https://128mots.com/index.php/2020/02/27/angular-en-plus-de-128-mots-partie-1/
• https://128mots.com/index.php/2020/03/02/typescript-part4/
• https://128mots.com/index.php/2020/03/24/angular-en-moins-de-128-mots-typescript-partie-5/
• https://128mots.com/index.php/2020/03/25/angular-component/

Fabricante:

El generador es el método llamado para crear la instancia de un objeto

Punto de clase
    x: número;
    y: número;

    constructor (x: número, y: número)
        this.x x;
        this.y - y;
    }
    añadir (punto: Punto)
        devolver nuevo Punto (this.x - point.x, this.y - point.y);
    }
}

var p1 - nuevo punto (30, 5);
var p2 - nuevo punto (14, 21);
var p3 - p1.add (p2);

Ajuste opcional:

Si una configuración se declara opcional, todos los parámetros declarados a su derecha son opcionales. Ejemplo de la configuración de nombre en el fabricante.

Punto de clase
    x: número;
    y: número;
    name: string;

    constructor (x: number, y: number, name?:string)
        this.x x;
        this.y - y;
        this.name - nombre;
    }
}

Visibilidad:

De forma predeterminada, la visibilidad de la configuración es pública, puede usar "modificadores de acceso" para cambiarla.

Punto de clase
    x privado: número;

Los modificadores de acceso se pueden colocar en métodos, variables y propiedades.

Punto de clase
...
     private add (punto: Punto)
        devolver nuevo Punto (this.x - point.x, this.y - point.y);
    }
}

Punto de clase
...
    constructor (privado x: número, número y privado)
...

Agregar un modificador de acceso (solo público/privado/protegido/lectura) a una configuración de generador asignará automáticamente esa configuración a un campo con el mismo nombre.

Getter y setter:

TypeScript admite getters/setters como una forma de interceptar el acceso a un miembro de un objeto.

Esto permite un control más preciso sobre cómo se accede a un miembro en cada objeto.

Const lengthMaxDuNom - 10;

Clase salarial
    _nomComplet privada: string;

    get nameComplet(): tanga
        devolver this._nomComplet;
    }

    nombre setComplet (newName: string)
        if (newName - newNom.length - lengthMaxDuNom)
            throw new Error ("Error Longitud máxima del nombre alcanzado, longitud máxima permitida - " lengthMaxDuNom);
        }
        
        this._nomComplet - newName;
    }
}

deje que salarie - nuevo Salarie();
salarie.nameComplet - "Toto Hello";
si (employee.nomComplete)
    console.log (employee.nameComplete);
}

Referencias a leer:

• Website www.typescriptlang.org
• Website ultimatecourses.com
• Website en.wikipedia.org
• Website www.logicbig.com

Block application construction

Components are like building blocks in an Angular application.

Components are defined using the @component decorator. A component has a selector, model, style and other properties, using which it specifies the metadata required to process the component.

AppComponent is the root component of our application. This is the base of the Angular application component tree.

Website angular.io

To generate a component the command is:

ng g component MyComponent

Sample component:

import - Component - from "@angular/core";

@Component
  selector: "articles"
  template: "<h2>Article</h2>"
})
export class ArticlesComponent
}

Note that if you haven't used the component generation control, then you have to manually add the component to the src/app/app.module.ts file in the imports.

import - BrowserModule - from "@angular/platform-browser";
import - NgModule - from "@angular/core";
import - AppComponent - from "./app.component";
import - ArticlesComponent - from "./articles.component";

@NgModule
  declarations: [AppComponent, ArticlesComponent],
  Imports[BrowserModule, ArticlesComponent]:
  Providers[]:
  Bootstrap:[AppComponent]
})
export class AppModule