What’s New in Angular 12?
Angular 12 is a modern framework for building web applications. Let’s break it down into simple points with examples.
1. Faster Builds with Ivy Everywhere
What it is: Ivy is Angular’s faster and smarter rendering engine.
Why it’s great: It makes your apps smaller and faster to load.
Example:
Before: Building a project took a lot of time.
Now: It compiles faster, saving you time during development.
2. CSS Styling Improvements
What it is: Better ways to write and use CSS in your app.
Why it’s great: Makes styling easier and more flexible.
Example:
htmlCopy code<button class="my-button">Click Me</button>In Angular 12, you can define styles globally or at the component level, and it works better with modern CSS techniques.
3. Strict Mode by Default
What it is: A mode that enforces clean and safe coding practices.
Why it’s great: Reduces bugs and makes your app more reliable.
Example:
Before: You could write loose, error-prone code.
Now: Angular 12 helps catch potential errors early, like undefined variables.
4. Nullish Coalescing Operator (??)
What it is: A shorthand to check if a value is null or undefined.
Why it’s great: Makes your code cleaner.
Example:
typescriptCopy codeconst user = null; const displayName = user ?? "Guest"; console.log(displayName); // Output: Guest
5. Updated Angular Material
What it is: Ready-to-use UI components (like buttons, cards, etc.).
Why it’s great: Makes your app look professional with less effort.
Example:
htmlCopy code<mat-card> <mat-card-title>Welcome</mat-card-title> <mat-card-content>Hello, User!</mat-card-content> </mat-card>
6. Better Testing
What it is: Improved tools for writing tests.
Why it’s great: Makes sure your app works correctly without bugs.
Example: You can now write tests more quickly and with less setup.
7. Smaller Bundle Sizes
What it is: Reduces the size of your app when deployed.
Why it’s great: Apps load faster, even on slow networks.
Example:
Before: Your app size might be 2 MB.
Now: It could be 1.5 MB with Angular 12’s optimizations.
8. Deprecation of Legacy Features
What it is: Angular removes old, unused code.
Why it’s great: Keeps the framework clean and modern.
Example: The
View Engineis being phased out, replaced by Ivy.
9. Support for Webpack 5
What it is: Webpack is a tool to bundle your app’s files.
Why it’s great: Adds modern features like faster builds and module federation.
Example: Module federation allows loading parts of an app from another app dynamically.
10. ESLint Over TSLint
What it is: A tool to catch mistakes in your code.
Why it’s great: ESLint is more modern and customizable.
Example: Instead of outdated linting rules, you get up-to-date checks for your TypeScript code.
Why Upgrade to Angular 12?
Your app will run faster.
Development will be easier.
You’ll get the latest features and improvements.