Deferrable views in angular 17 | Angular v17 new features

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Deferrable views in Angular 17 are a new feature that allows you to load and render views only when they are needed. This can improve the performance of your application by reducing the number of views that need to be loaded and rendered at any given time.

To use deferrable views, you need to add the defer attribute to a template element. This will tell Angular to defer the loading and rendering of that template until it is needed.

Here is an example of how to use deferrable views:

<div defer>
</div>

<button (click)="showDeferredView()">Show deferred view</button>

In this example, the div element with the defer attribute will not be loaded or rendered until the showDeferredView() the method is called. When the showDeferredView() method is called, Angular will load and render the contents of the div element.

You can also use deferrable views to load and render views based on other conditions, such as the value of a variable or the state of your application.

Here is an example of how to use deferrable views to load and render a view based on the value of a variable:

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'my-app',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {

  showDeferredView = false;

  constructor() {}

  ngOnInit() {}

  showDeferredView() {
    this.showDeferredView = true;
  }
}

<div defer *ngIf="showDeferredView">
  </div>

In this example, the div element with the defer attribute will only be loaded and rendered if the showDeferredView the variable is set to true.

Deferrable views are a powerful new feature in Angular 17 that can help you to improve the performance of your applications. By deferring the loading and rendering of views until they are needed, you can reduce the amount of time that it takes for your applications to load and render.

Here are some additional benefits of using deferrable views in Angular 17:

They can help you to reduce the memory footprint of your applications.
They can help you to improve the user experience of your applications by reducing the amount of time that it takes for views to load and render.
They can make your Angular code more modular and reusable.

If you are using Angular 17, I encourage you to experiment with deferrable views. It is a powerful new feature that can help you improve the performance and scalability of your applications.