What is the dynamic component(dynamic loading)in Angular?

Angular boon us component factory for doing the same. Component Factory is base class for creating components dynamically. It have method resolveComponentFactory .And viewContainerRef for creating componentWe will use the viewContainerRef of base of the dynamic component.Which will create component using componentFactoryResolver.For Example We have to load one of the dynamic component on click.

Base Component template

<div>

<button (click)=”onPress(‘ram’)” class=”bttn btn-primary”>Ram Home</button>

<button (click)=”onPress(‘shiv’)” class=”bttn btn-primary”>Shiv Home</button>

</div>

<ng-template #container></ng-template>

Base Component class

import { Component, ComponentFactoryResolver, OnInit, ViewChild, ViewContainerRef } from ‘@angular/core’;

import { RamComponent } from ‘../ram/ram.component’;

import { ShivComponent } from ‘../shiv/shiv.component’;

@Component({

selector: ‘app-orders-list’,

templateUrl: ‘./orders-list.component.html’,

styleUrls: [‘./orders-list.component.scss’]

})

export class OrdersListComponent implements OnInit {

@ViewChild( ‘container’,{read: ViewContainerRef}) container:ViewContainerRef;

componentRef:any;

constructor(private componentFactoryResolver:ComponentFactoryResolver) { }

ngOnInit(): void {

}

loadComponent(component){

this.unloadComponent();

const componentFactory = this.componentFactoryResolver.resolveComponentFactory(component);

this.componentRef = this.container.createComponent(componentFactory);

}

unloadComponent(){

if(this.componentRef){

this.container.remove();

this.componentRef = null;

}

}

onPress(home){

if(home==’ram’){

this.loadComponent(RamComponent);

}else{

this. loadComponent(ShivComponent);

}

}

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