Introduction

Welcome to our deep dive into Angular 17, the latest iteration of the renowned web development framework. This blog post will guide you through the exciting new features and enhancements that Angular 17 brings to the table. Whether you’re a seasoned Angular developer or just starting your journey, this blog will provide valuable insights and practical examples to help you get the most out of Angular 17. So, let’s embark on this journey to explore the power and elegance of Angular 17!

1. Deferrable Views

Deferrable views are a new feature that enhances both performance and developer experience1. This feature allows developers to defer the rendering of certain parts of the application until they are needed, improving the overall performance of the application.

Imagine you have an e-commerce application where users can browse through a variety of products. Each product has a detailed view which includes high-resolution images, customer reviews, and similar product suggestions. Loading all this data at once can slow down your application, especially on devices with slower internet connections.

With Angular 17’s deferrable views, you can optimize this scenario significantly. Here’s how

import { ProductDetailsComponent } from './product-details.component';

@Component({
  selector: 'app-product',
  template: `
    <!-- Product summary -->
    <div class="product-summary">
      <!-- Product summary details -->
    </div>

    @defer (when userClicksOnProduct) {
      <app-product-details [productId]="selectedProductId" />
    }
  `,
  standalone: true,
  imports: [ProductDetailsComponent]
})

In this example, the ProductDetailsComponent is wrapped in a @defer block. The Angular compiler rewrites the static import of the ProductDetailsComponent to a dynamic import (() => import ('./product-details.component')), and the component will be loaded only when the condition userClicksOnProduct is met.

This means that the detailed view of a product, including high-resolution images, customer reviews, and similar product suggestions, will only be loaded when a user clicks on a product. This can significantly improve the initial loading speed of the page and provide a smoother browsing experience for the users.

2. Built-in Control Flow

Angular 17 introduces a new block template syntax that provides powerful features with simple, declarative APIs1. This new syntax allows for control flow, lazy loading, and more. For example, the new @for and @if blocks simplify the formulation of control flow in templates2.

In an e-commerce application, you often have to display a list of products. Each product might have different properties and you might want to display them conditionally. For instance, you might want to highlight products that are on sale or out of stock.

@Component({
  selector: 'app-product-list',
  template: `
    @for (let product of products) {
      <div class="product-card">
        <h2>{ {product.name} }</h2>
        <p>{ {product.description} }</p>
        <p class="price">{ {product.price} }</p>

        @if (product.isOnSale) {
          <p class="sale">On Sale!</p>
        }

        @if (product.isOutOfStock) {
          <p class="out-of-stock">Out of Stock</p>
        }
      </div>
    }
  `,
})
export class ProductListComponent {
  products = [
    // Array of products
  ];
}

In this example, we’re using the @for block to loop over the products array and display each product. Inside the loop, we’re using the @if block to conditionally display the “On Sale!” and “Out of Stock” labels based on the isOnSale and isOutOfStock properties of each product.

This new syntax makes it easier to write and understand control flow in Angular templates, leading to cleaner and more maintainable code. It’s just one of the many improvements that Angular 17 brings to the table.

3. Improved Performance

Performance is a critical aspect of any web application, and Angular 17 has made significant strides in this area. With up to 90% faster runtime with built-in control flow loops in public benchmarks, Angular 17 ensures your e-commerce application runs smoothly and efficiently.

Let’s consider our e-commerce application scenario. When a user visits the site, they may interact with various components such as product listings, product details, shopping cart, and user profile. Each of these components may have complex logic and heavy computations which can slow down the application.

With Angular 17, the built-in control flow loops optimize these computations, ensuring that only necessary calculations are performed. This results in a faster runtime, leading to a smoother user experience.

@Component({
  selector: 'app-product-list',
  template: `
    @for (let product of products) {
      <app-product-card [product]="product" />
    }
  `,
})
export class ProductListComponent {
  products = this.productService.getProducts();

  constructor(private productService: ProductService) {}
}

In this example, we’re using the @for block to loop over the products array and display each product. The @for block in Angular 17 is optimized to ensure that the loop runs as fast as possible, improving the runtime performance of the application.

Moreover, Angular 17 offers up to 87% faster builds for hybrid rendering and 67% for client-side rendering. This means that the build process is quicker, making the development process more efficient. Faster builds also mean faster deployment times, which is crucial in a fast-paced e-commerce business environment.

In conclusion, the performance improvements in Angular 17 can lead to a better user experience, more efficient development process, and ultimately, a more successful e-commerce application.

4. Fresh New Look

Angular 17 introduces a fresh new look that reflects the future-looking features of Angular. This includes a new brand and a new home for Angular’s documentation — angular.dev.

While the “Fresh New Look” is more about the branding and documentation, it also signifies the modern and forward-thinking approach of Angular 17. This can be reflected in your e-commerce application as well.

For instance, you can leverage Angular 17’s powerful features to create a modern and user-friendly interface for your e-commerce application. Here’s an example of how you might structure your main app component:

@Component({
  selector: 'app-root',
  template: `
    <app-header></app-header>
    <app-sidebar></app-sidebar>
    <app-product-list></app-product-list>
    <app-footer></app-footer>
  `,
  styleUrls: ['./app.component.css']
})
export class AppComponent {}

5. Interactive Learning Journey

Angular 17 introduces a brand new interactive learning journey. This feature, powered by WebContainers, allows developers to learn Angular and the Angular CLI at their own pace, directly in the browser.

Let’s consider an e-commerce application scenario to understand how this can be beneficial.

Imagine you’re a developer tasked with building an e-commerce application using Angular. You’re familiar with Angular, but you haven’t had the chance to explore the latest features in Angular 17.

With the interactive learning journey, you can quickly get up to speed with the new features. You can learn how to use the new built-in control flow, deferrable views, and other features by writing and testing code directly in the browser. This hands-on approach can help you understand how these features work in a practical context.

For instance, you might go through a tutorial on how to use deferrable views to optimize the loading of product images in your e-commerce application. Or, you might learn how to use the new control flow syntax to display a list of products based on various conditions.

The interactive learning journey is not just about learning new features. It’s also about understanding how to use these features to solve real-world problems. By providing a practical, hands-on learning experience, Angular 17 helps developers build better applications more efficiently.

Relevant Information:

In an era defined by digital transformation, businesses strive to stand out and reach their target audience in unique and engaging ways. One company at the forefront of this innovation is Angrio Technologies, an emerging tech powerhouse that's setting a new standard in the world of technology with its cutting-edge front-end solutions.

At Angrio Technologies, the team understands that a company's website is often the first touchpoint for potential customers. Angular, a powerful front-end framework, empowers Angrio's developers to create robust and responsive web applications that not only load quickly but provide a seamless and engaging user experience.

By creating robust web applications and cross-platform mobile apps, Angrio elevates technology performance and drives engagement to new heights. so visit now

More content at AngrioTechnologies.

Follow us on Twitter, LinkedIn

Follow me on  LinkedIn