Angular 4

1. Smaller and Faster: Angular 4 introduced improvements in bundle size and runtime performance compared to Angular 2. The generated JavaScript bundles are smaller, leading to faster application loading times and improved runtime performance.

2. Animation Package Separation: In Angular 4, the animation logic was moved to a separate package, @angular/animations. This separation allows developers to use Angular animations without having to include the entire animation library in their application bundles, resulting in smaller bundle sizes.

3. ngIf and ngFor Improvements: Angular 4 introduced improvements to the *ngIf and *ngFor structural directives, making them more efficient and reducing memory consumption when used in templates.

Before diving into learning Angular 4, it's helpful to have a solid foundation in certain technologies and concepts. Here are some skills you should consider having before learning Angular 4:

1. HTML/CSS/JavaScript: Proficiency in HTML (Hypertext Markup Language), CSS (Cascading Style Sheets), and JavaScript is essential for web development with Angular. These are the building blocks of web development, and Angular builds upon them.

2. TypeScript: Angular 4 is written in TypeScript, a superset of JavaScript. Having a good understanding of TypeScript is crucial for working with Angular, as all Angular applications are written in TypeScript.

3. Basic Programming Concepts: Understanding of basic programming concepts such as variables, data types, functions, loops, and conditionals is important for writing code in Angular. These concepts are fundamental to all programming languages and are applicable in Angular development.

Learning Angular 4 equips you with a variety of skills that are valuable in web development and software engineering roles. Here are some skills you can gain by learning Angular 4:

1. Proficiency in TypeScript: Angular 4 is built with TypeScript, a superset of JavaScript. By learning Angular, you gain proficiency in TypeScript, including features such as static typing, interfaces, generics, decorators, and more.

2. Understanding of Component-Based Architecture: Angular follows a component-based architecture, where the UI is composed of reusable components. Learning Angular helps you understand how to structure and organize applications into components for better maintainability and scalability.

3. Single Page Application (SPA) Development: Angular 4 is often used to build Single Page Applications (SPAs), which provide a more seamless and responsive user experience. By learning Angular, you gain skills in developing SPAs and handling client-side routing, navigation, and state management.