under the

Spotlight

 

 

 

  under the

Spotlight

In a nutshell

Communities

Social Developer

Recognitions

Cloud Solution Architect @Microsoft

GDE,MCT and former MVP from SL

Top stackoverflow contributor

 

I'm Sajeetharan Sinnathurai

@sajeetharan
@kokkisajee
@sajeetharan
@sajeetharan

Talk is all about!

Not these!

But this!

"Frameworks may come and go , concepts remains the same - Sajee"

The following piece of talk has no basis more reliable than my own meandering experience and strictly not for Beginners

If you feel bored! watch LPL

Let's get Reactive with Angular

jpurafoss.azurewebsites.net

Open and Vote!

https://www.youtube.com/watch?v=CQ1IC3M-gFk

Then

Now

25 Years of Javascript

AngularJS

2-way databinding

2009

React

Component based view library

2013

React Native

Native Mobile Apps using React

2014

Progressive framework

Vue

Angular (v2)

2016 

Future ready

$scope

ng-if

ng-app

ng-model

mobile

oriented

better

performance

x11

@kokkisajee

Angular 1.x vs Angular

Stable and performant

2017

2020

Language service && Tooling

Smaller, Faster and Easier to use

Smaller, faster, easier

Angular (v4)

Angular (v5)

Angular (v10)

Typescript 4.0,webpack 5

Angular (v11)

"HEROES DON'T ALWAYS WEAR CAPES

SOMETIMES THEY CODE ANGULAR"

  • A framework for web front-end app 

  • A platform for integrated development

  • An ecosystem for developers

Angular as a Framework

 

  •       Batteries Included
  •       Easy to learn
  •       Qualified
  •       Full stack for modern web app

From Framework to platform

Angular As an Ecosystem

Go here - > madewithangular.com

600+ Google projects!

Microsfot uses Angular for Xbox sites

120+ GDES , 700+ Communities , 69k Contributors

Lets see some of it's Core Concepts!

Building Blocks of Angular

  • Module
  • Services
  • Component
  • Pipes
  • Directives
  • Dependency Injection

Mahela & Sanga are Certified Professional Developers

@kokkisajee

Angular App Structure

Application Source

Our application is divided in two parts. -Application itself & Application bootstrap

Angular App

Our modules, routes, components & services live here.

Angular Boostrap

We bootstrap our app depending on what platform were developing for, and add any required polyfills & vendors.

Configuration

Typescript config, npm packages, scripts, webpack config, express server, and so on...

@kokkisajee

@Module

import {BrowserModule} from '@angular/platform-browser';
import {NgModule} from '@angular/core';
import {FormsModule} from '@angular/forms';
import {HttpModule} from '@angular/http';

import {AppComponent} from './app.component';
import { HomeComponent } from './home/home.component';
import {AppRoutingModule} from "./app-routing.module";

@NgModule({
    declarations: [
        AppComponent,
        HomeComponent
    ],
    imports: [
        BrowserModule,
        FormsModule,
        HttpModule,
        AppRoutingModule
    ],
    providers: [/**DataService, UserService**/],
    bootstrap: [AppComponent]
})
export class AppModule {
}

Help organize an application into cohesive blocks of functionality.

This is Angular

The rest is a standard JS/Typescript class

@kokkisajee

@Component

import {Component, OnInit} from '@angular/core';
import {Router} from "@angular/router";
import {UserService} from "../shared/services/user.service";

@Component({
    selector: 'app-login',
    templateUrl: './login.component.html',
    styleUrls: ['./login.component.scss']
})

export class LoginComponent implements OnInit {

    constructor(private us:UserService, private route: Router) {
    }

    ngOnInit() {
    }

    login() {
        this.us.login();
    }

    logout() {
        this.us.logout();
    }
}

Components are the most basic building block of an UI in an Angular application

Decorator

Annotate this is a Angular component

Angular Injects for us every dependency

@kokkisajee

@Directives

Components still have directives

<div [ngStyle]="setStyles()">
  <p *ngFor="let player of players">...</p>
</div>
  • No more ng-show, ng-hide, ng-click but functionality is still available
  • Types of Angular Directives :

Attribute Directives : ngStyle, ngClass, …Structural Directives : ngIf, ngSwitch, ngFor, …

@kokkisajee

Pipes

Components can display formatted data

import { Pipe } from '@angular/core';
import { PipeTransform } from '@angular/core';
@Pipe({name: 'filterReviewByStatus'})
export class FilterReviewByStatusPipe implements PipeTransform {


}

DatePipe, UpperCasePipe, LowerCasePipe, CurrencyPipe, PercentPipe ...

<p>
    The chained mario's birthday is 
    {{  birthday | date:'fullDate' | uppercase}}
</p>

Services

Service is a class that encapsulates some sort of functionality and provides it as a service for the rest of the application

export class UserService {
  private users: User[] = [];

  constructor(
    private backend: BackendService,
    private logger: Logger
  ) { ... }

  getAllUSers() {
    return this.users;
  }
}

@kokkisajee

Data Model

View

@Component({
  template: "<h1>{{title}}</h1>"
})
class MyComponent {
  title = "Hello!";
}
<h1>Hello!</h1>

Angular Router

  • URL-Component Mapping
  • Guard & Resolve
  • Nesting
  • Lazy-Loading

Angular CLI

  • Scaffold Angular project
  • Generate code
  • Debug
  • Test
  • Lint
  • Deploy

http://cli.angular.io

Augury

https://augury.angular.io

Angular Mobile Toolkit

http://mobile.angular.io

What Angular has

given me

Text

2010

2015

2019

2018

2020

Started with angularjs , first industry project

Started with angular, became the top angularjs answerer on SO

Became google dev expert, Top contributor angular on SO, 18 Sessions , 230 Repositories

Started NG-Srilanka, First Angular Team meet at San Francisco

Book on Angular Projects,Top 4 contributors on Angular, Aim to produce 2 more GDES from SL

Why is this relevant to you?

Why I chose Angular

1. Why is this relevant to you?

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

Why I chose Angular

1. Why is this relevant to you?

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

If all you have is a screwdriver, all the problems will look like screws

Why I chose Angular

1. Why is this relevant to you?

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

But if all you have is a toolbox...

Why I chose Angular

1. Why is this relevant to you?

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

Today, Angular is your toolbox!

 

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

When is Angular suitable?

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

👇🏻

3. When is Angular suitable?

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

👇🏻

MICROSOFT

3. When is Angular suitable?

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

“I don’t want to refactor this app again in 6 months”

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

"The features of the web app and the mobile app are similar, do not write it twice"

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

1. OPINION

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

2. CLI

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

“I need to refactor +100 components, quickly”

Schematics

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

4. Material

 

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

5. Observable-based

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

6. Developer Ergonomics

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

6. i18n

 

Internationalization

 

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

7. Performance

 

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

8. LTS

 

Long-term Support

 

“Google has more than 600 apps written in Angular”

A googler

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

Overwhelming

Why I chose Angular

1. Why is this relevant to you? 

2. Some context please!

3. When is Angular suitable?

4. Technical Examples!

5. When is Angular not ideal?

🍺🍺🍺

Learning Curve

Advice #1

Understand the big picture

Advice #2

Read TypeScript Handbook

Advice #3

Play around with RxJS

Advice #4

Follow smart people

Angular - Angular Contributors

Advice #5

Create Software

Advice #6

Contribute to GitHub

Advice #7

Give a talk

Advice #8

Write an article

Advice #9

Attend international events

Advice #10

Talk to me !

Demo Time : Voting App

Hope things go smoothly

  • ES2015+
  • TypeScript
  • RxJS / Observables
  • (Service Worker)
  • (webpack)
  • (Component Design)

Required Knowledges

Angular << Modern Web

"The Web has moved.

Frameworks must move"

Keep Learning

Q&A

I'm not google!

Please don't ask any!

Where to go from here?

Thank you!

 
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