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Discover What is New in Angular 18: Features and Enhancements

Angular 18 is the latest update to Google’s well-known front-end development framework. It introduces new tools and improvements that make it easier to build modern web applications. The focus of Angular 18 is to improve developer experience, increase application performance, and make the framework easier to use for building scalable and efficient web apps.
 
In this article, we will take a detailed look at the key features and improvements in Angular 18. We will explore how they work, why they matter, and how you can use them to build better web applications.
 

1. Enhanced Signals and Reactive Composition

 
Angular 18 builds on the concept of Signals, which was introduced in earlier versions (Angular 16 and 17). Signals are a new way to handle reactivity in your applications. They provide better performance and make state management more predictable and easier to debug.
 
What’s New in Angular 18?
  • Full Integration of Signals: Signals are now a core part of Angular’s reactive programming model.

  • Improved Change Detection: Signals allow more granular updates, which means only the parts of the app that need to change are updated.

  • Reactive Composition APIs: Developers can now combine Signals with Observables (used in RxJS) for a smoother development experience.
Why It’s Important
  • State updates become predictable and easier to manage.

  • Debugging reactive states is less complicated.

  • Existing RxJS workflows can be used with Signals, so you don’t need to change everything in your app.
Example Code
import { signal, computed } from '@angular/core';

const count = signal(0);
const doubled = computed(() => count() * 2);

function increment() {
  count.set(count() + 1);
}

 

2. Built-in Tailwind CSS Support

 
Tailwind CSS is a popular framework that helps developers style their apps quickly using utility-first classes. Angular 18 now includes built-in support for Tailwind CSS, so you no longer need to configure it manually.
 
Key Benefits
  • Quick setup with a single command.

  • Faster and easier styling of your applications.

  • There is no need for extra configuration files.
 
How to Enable Tailwind CSS

Run the following command in your project:

ng add @angular/tailwind

 

3. Advanced Server-Side Rendering (SSR) with Streaming

 
Server-side rendering (SSR) allows your app to render content on the server and send it to the browser. This improves the speed of your app and makes it more SEO-friendly.
 
What’s New in Angular 18?
  • Streaming SSR: You can now render parts of the page while other parts are still loading, which improves the user experience.

  • Partial Hydration: Only the necessary JavaScript code is executed on the client side, reducing load times.

Benefits
  • Faster Time-to-Interactive (TTI).

  • Improved app performance and SEO.

 

4. Component-First Routing Refinements

 
Angular 18 enhances the Component-First Routing system, which makes routing easier to manage by tying it directly to standalone components.
 
Features
  • Define nested and lazy-loaded routes within components.

  • Simplified configuration for routing in modular apps.

Example Code
@Component({
  standalone: true,
  template: `<router-outlet></router-outlet>`,
})
export class AdminComponent {}

const routes = [
  { path: 'admin', component: AdminComponent, children: [
      { path: 'settings', component: SettingsComponent },
  ] },
];

 

5. Improved TypeScript Support

 
Angular 18 upgrades to TypeScript 5.3, which brings:
 
  • Faster build times and type-checking.

  • Support for new TypeScript features like decorators.

  • Better control over null checks to avoid errors.
 

6. Dynamic Theme Switching

 
Angular 18 makes it easier to switch themes in your app. You can now add light mode, dark mode, or custom themes that change at runtime.
 
Features
  • Built-in Theme Service to manage themes.

  • CSS Variables for flexible and maintainable themes.

Example Code
import { ThemeService } from '@angular/core';

const themeService = new ThemeService();
themeService.setTheme('dark');

 

7. Improved Testing Tools

 
Testing your apps is easier in Angular 18 with new utilities like:
 
  • Mocked Signals for reactive state testing.

  • Improved Component Harness for intuitive interactions during testing.

 

8. Smaller Bundle Sizes with ESBuild Optimizations

 
The Angular CLI in version 18 uses updated ESBuild tools that make builds faster and reduce the size of production bundles. Smaller bundle sizes mean:
 
  • Faster load times for users.

  • Less bandwidth usage.

 

9. Updated Angular Material Components

 
Angular Material gets a big update in Angular 18:
 
  • New components based on Material Design 3 (M3).

  • Improved theming options to work with the Dynamic Theme API.

  • More responsive and accessible components.
 

10. Enhanced Debugging with Angular DevTools

 
Angular DevTools is a browser extension that helps debug Angular apps. The new version includes:
 
  • Visualization of Signals and their dependencies.

  • Improved error tracking for SSR and lazy-loaded routes.

 

Why Should You Upgrade to Angular 18?

 
Here are the top reasons to upgrade:
 
  • Better Performance: Optimizations like SSR streaming and smaller bundles make apps faster.

  • Improved Developer Experience: Features like Signals, Component-First Routing, and Tailwind CSS support simplify development.

  • Modern Features: New TypeScript support, dynamic themes, and updated Angular Material components keep your app up-to-date with modern web standards.
 

How to Upgrade

 

To upgrade your existing Angular project, run this command:

ng update @angular/core @angular/cli

 

Work with us

 
At Sparkle Web, we specialize in using Angular to build scalable, modern, and efficient web applications. Whether you are upgrading to Angular 18 or starting a new project, we are here to help.
 
Contact us today, and let’s create something amazing together!

With Angular 18, you can build apps faster, manage state easily, and deliver a better experience to your users. Ready to embrace these powerful features? Let Sparkle Web bring your ideas to life!

    Author

    • Owner

      Vikas Mishra

      A highly skilled Angular & React Js Developer. Committed to delivering efficient, high-quality solutions by simplifying complex projects with technical expertise and innovative thinking.

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