🅰️ Angular 17 Setup

 

📌 WHAT is Angular 17?

Angular 17 is the latest stable version of Angular released by Google (Nov 2023). It is a TypeScript-based front-end web application framework that provides tools for:

  • Building dynamic single-page applications (SPAs)

  • Optimizing rendering performance

  • Using components, modules, services, routing, forms, and more.

🚀 Key Highlights in Angular 17

FeatureDescription
✅ Standalone ComponentsNo need for NgModule (simplified bootstrapping)
✅ Signals (Experimental)Reactive state management, like React signals
✅ Declarative Control FlowNew syntax: @if, @for, @switch
✅ Improved SSR HydrationFaster first paint with server-rendered pages
✅ Build PerformanceVite and esbuild-powered builds
✅ TypeScript 5+ supportLatest TypeScript features
✅ Lazy-loading improvedBetter support for on-demand route/component loading

📌 WHY Angular 17?

ReasonBenefit
✅ Modular & ModernClean architecture with new Standalone API
✅ Fast & OptimizedFast rendering, smaller bundles
✅ Declarative & ReactiveNew signal-based reactivity (opt-in)
✅ Better DXVite, standalone bootstrap, control flow syntax
✅ Backed by GoogleEnterprise-grade reliability

📦 Dependencies & Requirements for Angular 17

ToolVersion (Minimum)Purpose
Node.jsv16.14.x or later (v18 LTS recommended)JavaScript runtime
npmv8.x or laterPackage manager
Angular CLIv17Project creation, dev server, builds
TypeScriptv5.xLanguage for Angular apps

✅ Install Node.js from https://nodejs.org

📦 HOW to Setup Angular 17 

🔹 1. Install Angular CLI v17

# Uninstall any previous CLI version (optional)
npm uninstall -g @angular/cli

# Install Angular CLI version 17 globally
npm install -g @angular/cli@17

✅ Verify:

ng version

You should see Angular CLI v17.

🔹 2. Create a New Angular 17 Project

ng new my-angular17-app

🟢 CLI Prompts:

  • Add Angular routing? – Yes if you want navigation between pages

  • Style format? – Choose CSS, SCSS, etc.

📁 Output Structure:


my-angular17-app/
├── src/
│   ├── app/
│   ├── main.ts
│   └── index.html
├── angular.json
├── package.json
└── tsconfig.json
├── angular.json
├── package.json
└── tsconfig.json

🔹 3. Navigate & Serve the App

cd my-angular17-app 
ng serve

🔗 Visit: http://localhost:4200

🔍 Angular 17 Bootstrapping Explained 

✅ 4. main.ts: Application Entry Point

// src/main.ts
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app/app.component';

bootstrapApplication(AppComponent)
  .catch(err => console.error(err));


📌 Note:

  • No AppModule is needed anymore.

  • bootstrapApplication() handles everything.

✅ 5. AppComponent: Root Standalone Component

// src/app/app.component.ts
import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  standalone: true,               // ✅ Standalone component declaration
  imports: [],                    // 👈 You can import other standalone components/modules
  template: `
    <h1>Welcome to Angular 17!</h1>
    <p>{{ title }}</p>
  `,
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  title = 'my-angular17-app';
}

🟢 You can now import components and directives directly in imports without modules.

✅ 6. index.html: HTML Shell

<!-- src/index.html -->
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <title>My Angular 17 App</title>
  <base href="/" />
</head>
<body>
  <app-root></app-root> <!-- Angular will mount AppComponent here -->
</body>
</html>

🔁 Bootstrapping Flow Summary (Angular 17)


main.ts
  ⇩
bootstrapApplication(AppComponent)
  ⇩
AppComponent
  ⇩
index
  ⇩
AppComponent
  ⇩
index.html <app-root> renders

💡 New Angular 17 Features in Context

✅ 1. Standalone Components

No need for:

@NgModule({
  declarations: [],
  imports: [],
  bootstrap: []
})

Instead, use:

@Component({ standalone: true })

✅ 2. New Declarative Syntax (optional)

Use native-like syntax:

@if (loggedIn) {

  <p>Welcome back!</p>

}


Instead of using *ngIf:

<p *ngIf="loggedIn">Welcome back!</p>

✅ 3. Signals (Reactive State Management)




import { signal } from '@angular/core';

const counter = signal(0);

function increment() {
  counter.update(c => c + 1);
}

📦 Production Build


ng build --configuration production


Output goes to dist/ folder — minified, tree-shaken files.

📘 Useful Angular CLI Commands

CommandDescription
ng generate component my-compCreate a new component
ng generate service apiCreate a service
ng serveStart local dev server
ng buildCompile production build
ng testRun unit tests
ng lintRun code linter

✅ Summary: Angular 17 Setup

StepDescription
1.Install Angular CLI 17
2.Create project with ng new
3.Serve app with ng serve
4.Uses bootstrapApplication() instead of NgModule
5.Write standalone components
6.Run production build, add routes, services as needed

Comments

Post a Comment

Popular posts from this blog

Interview Tips: Dot NET Framework vs Net CORE

Image
Interview Tips: Dot NET Framework vs Net CORE .NET Framework What :  It's a software development framework created by Microsoft, mainly used for building Windows applications. Why :  It has been around for a long time and is very reliable for building large, complex applications especially for enterprises. How :  You use it to build applications that run exclusively on Windows, making use of a vast array of built-in libraries and features. Why Not :  It can't be used for cross-platform applications, so if you need your application to run on other operating systems like macOS or Linux, .NET Framework isn't the right choice. .NET Core What :  It's a newer, open-source, and cross-platform framework from Microsoft, designed for modern app development. Why :  It's lightweight, high-performance, and can run on multiple operating systems (Windows, macOS, Linux). How :  You use it to build modern, scalable, and quickly deployable applications, especially cloud...
Read more

FREE Webinar: Run Your Own Independent DeepSeek LLM

Image
Faith Infotech Academy, Technopark invites you to an exclusive FREE webinar on "Run Your Own Independent DeepSeek LLM" , where you’ll learn how to deploy and manage DeepSeek LLM effectively. Speaker:  Abhilash Nelson  Trainer & Researcher in AI & Machine Learning  An expert in AI and machine learning, Abhilash will guide you through the process of setting up and running your own independent DeepSeek LLM, empowering you with insights into model deployment, fine-tuning, and real-world applications. What You’ll Learn: ✅ Understanding DeepSeek LLM and its capabilities ✅ Setting up DeepSeek LLM on your own infrastructure ✅ Fine-tuning and optimizing the model for various applications ✅ Use cases and practical demonstrations Key Takeaways: ✅ Mastering DeepSeek LLM for Developers ✅ Boost Your VS Code workflow ✅ Learn to Run DeepSeek locally for AI assistance 📅 Date: 6 February 2025, Thursday 🕒 Time:  10.00 to 11.00 AM 📍 Mode: Online (Webinar link will be shar...
Read more

ORACLE 11g: User Authentication System with Stored Procedure and SQL*Plus Integration

Oracle 11g PL/SQL: User Authentication System with Stored Procedure and SQL*Plus Integration Creating the tblUsers and tblRoles tables with sequences and 6 records, creating a stored procedure sp_UserNameAndPassword that returns user details as an OUT parameter (using a record type), and modifying the login.sql script to accept username and password, call the procedure, and display the results in SQL*Plus.  The solution will include "what," "why," "how" explanations, comments, and adhere to coding standards with exception handling. Step-by-Step Solution 1. Create Tables and Insert Records Create the tables with sequences for primary keys and insert 6 records. -- Create tblRoles table with sequence for RoleId CREATE TABLE tblRoles ( RoleId NUMBER ( 10 ) PRIMARY KEY , roleName VARCHAR2 ( 50 ) NOT NULL ) ; CREATE SEQUENCE role_seq START WITH 1 INCREMENT BY 1 ; -- Insert 4 roles INSERT INTO tblRoles ( RoleId , roleName ) VAL...
Read more