Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Introduction to Angular 2
Search
Shuhei Kagawa
December 14, 2015
Programming
2
160
Introduction to Angular 2
My talk about Angular 2 at #tkjs Dec 14, 2015
http://www.meetup.com/tokyojs/events/226903404/
Shuhei Kagawa
December 14, 2015
Tweet
Share
More Decks by Shuhei Kagawa
See All by Shuhei Kagawa
Profiling Node.js apps on production
shuhei
0
880
Building a Pixel Art Editor with Elm
shuhei
1
780
Redux Middleware Wars (Japanese)
shuhei
8
1.8k
Redux Middleware Wars (English)
shuhei
0
170
Draw Animated Chart on React Native
shuhei
0
8.8k
Angular 2 Offline Compiler
shuhei
0
5.4k
Weird Attractors
shuhei
0
860
Angular 2 @ JS Ojisan #6-3
shuhei
1
3k
Git の内部データ構造
shuhei
2
2k
Other Decks in Programming
See All in Programming
ソフトウェア品質特性、意識してますか?AIの真の力を引き出す活用事例 / ai-and-software-quality
minodriven
3
480
Cursor/Devin全社導入の理想と現実
saitoryc
29
22k
Vibe Coding の話をしよう
schroneko
14
3.9k
AIコーディングの理想と現実
tomohisa
38
40k
UMAPをざっくりと理解 / Overview of UMAP
kaityo256
PRO
3
1.6k
파급효과: From AI to Android Development
l2hyunwoo
0
170
イベントソーシングとAIの親和性ー物語とLLMに理解できるデータ
tomohisa
0
120
Serving TUIs over SSH with Go
caarlos0
0
780
flutter_kaigi_mini_4.pdf
nobu74658
0
160
2025-04-25 GitHub Copilot Agent ライブデモ(スクリプト)
goataka
0
130
プロダクトエンジニアのしごと 〜 受託 × 高難度を乗り越えるOptium開発 〜
algoartis
0
250
クラス設計の手順
akikogoto
0
130
Featured
See All Featured
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
30
2k
BBQ
matthewcrist
88
9.6k
A Modern Web Designer's Workflow
chriscoyier
693
190k
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
45
7.2k
StorybookのUI Testing Handbookを読んだ
zakiyama
30
5.7k
Art, The Web, and Tiny UX
lynnandtonic
298
20k
The Cult of Friendly URLs
andyhume
78
6.4k
Raft: Consensus for Rubyists
vanstee
137
6.9k
GitHub's CSS Performance
jonrohan
1031
460k
For a Future-Friendly Web
brad_frost
177
9.7k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
34
3k
Sharpening the Axe: The Primacy of Toolmaking
bcantrill
41
2.3k
Transcript
Introduction to Angular 2 Shuhei Kagawa Dec 14, 2015 #tkjs
Who are you? • Shuhei Kagawa • Front/Back-end developer @
M3, Inc. • Rails/Angular.js/Node.js • Building SPA >10000 lines of JavaScript
None
None
Choosing JS framework is hard
What I wanted 1.5 years • Data-binding (less boilerplate) •
Amount of learning resources (for team development) • (Seemingly) Long-time support • Rich standard libraries (security, validation and etc.)
https://www.google.com/trends/
http://www.bennadel.com/blog/2439-my-experience-with-angularjs---the-super-heroic-javascript-mvw-framework.htm
Piled up APIs since 2009 https://en.wikipedia.org/wiki/File:Quebrada_de_Cafayate,_Salta_(Argentina).jpg
Angular: The Good Parts • Directive > Controller • Don't
rely on scope inheritance • Directive API (controllerAs, bindToController)
None
Angular 2 • Thrown away outdated/unintuitive APIs • Completely rewritten
with
What is Angular 2 like? • It's coming up soon(?)
• Better syntax • Best-in-class performance • Cutting-edge architecture
alpha.53 Weekly Breaking Changes
beta is coming soon... Less Breaking Changes
None
Adoption at Google 100s developers Millions LOC
Better syntax • TypeScript is the first language (no more
JS quirks) • Consistent template syntax • Scoped CSS • ES6 Modules (no more own module system)
Languages ES5 ES6 TypeScript Dart
ES6 Modules Class Decorator Class property import { Component, Injectable
} from 'angular2/core'; @Injectable() class Hero { id: number; name: string; } @Component({ selector: 'my-app', templateUrl: './my-app.html', styleUrls: ['./my-app.css'] }) export class AppComponent { public title = 'Tour of Heroes'; public heroes = HEROES; public selectedHero: Hero; onSelect(hero: Hero) { this.selectedHero = hero; } getSelectedClass(hero: Hero) { return { selected: hero === this.selectedHero }; } } var HEROES: Hero[] = [ { "id": 11, "name": "Mr. Nice" }, // ... ];
<h1>{{title}}</h1> <h2>My Heroes</h2> <ul class="heroes"> <li *ngFor="#hero of heroes" (click)="onSelect(hero)"
[ng-class]="getSelectedClass(hero)"> <span class="badge">{{hero.id}}</span> {{hero.name}} </li> </ul> <div *ngIf="selectedHero"> <h2>{{selectedHero.name}} details!</h2> <div> <label>id: </label>{{selectedHero.id}} </div> <div> <label>name: </label> <div><input [(ngModel)]="selectedHero.name" placeholder="name"></div> </div> </div> Text binding Loop Event handler (Seemingly) Two-way data binding
Template syntax • foo="bar" • [foo]="bar" • (foo)="bar()" Plain (passed
as a string) Data binding (evaluated as expression) Event handler • ng-include="'hello.tpl'" • ng-href="https://google.com?q={{keyword}}"
Best-in-class performance • Ultra-fast change detection • View caching •
One-time and offline compilation • (Change detection in Web Worker) • (Server-side rendering (Angular Universal))
https://www.youtube.com/watch?v=UxjgUjVpe24 http://info.meteor.com/blog/comparing-performance-of-blaze-react-angular-meteor-and-angular-2-with-meteor
https://www.youtube.com/watch?v=UxjgUjVpe24 http://info.meteor.com/blog/comparing-performance-of-blaze-react-angular-meteor-and-angular-2-with-meteor
Cutting-edge Architecture • Component-based • Uni-directional data flow • Rx.js
built-in • Compatible with Immutable.js
import { Component } from 'angular2/core'; import { Control }
from 'angular2/common'; import { Jsonp, JSONP_PROVIDERS } from 'angular2/http'; import { bootstrap } from 'angular2/platform/browser'; import { GitHubService } from './github-service'; @Component({ selector: 'my-app', templateUrl: 'app/my-app.html', styleUrls: ['app/my-app.css'] }) export class MyApp { searchText = new Control(); repos: any; constructor(private github: GitHubService) { this.repos = this.searchText.valueChanges .debounceTime(300) .flatMap(text => this.github.search(text)); ; } } bootstrap(MyApp, [JSONP_PROVIDERS, GitHubService]);
<h3>GitHub repositoy search</h3> <p> <input [ngFormControl]="searchText" placeholder="keyword" class="form-control"> </p> <ul
class="repositories"> <li *ngFor="#repo of repos | async"> <a [href]="repo.html_url">{{repo.full_name}}</a> {{repo.stargazers_count}} stars </li> </ul>
import { Injectable } from 'angular2/core'; @Injectable() export class GitHubService
{ constructor(private jsonp: Jsonp) {} search(keyword) { return this.jsonp.get(`https://api.github.com/ search/repositories?callback=JSONP_CALLBACK&q=$ {keyword}&sort=stars`) .map(res => res.json()['data']['items']); } }
Upgrade from 1.x • Componentize everything • ngUpgrade • Mix
ng1 components and ng2 components • ngForward • Write ng1 app with ng2 syntax
Libraries • ng1 libraries doesn't work on ng2 • But
people started re-building popular ones with ng2 • ionic2, angular2_material, ng2-bootstrap, ng2- select and etc.
Browser support
None
More resources • angular.io • github.com/AngularClass/awesome-angular2 • egghead.io Angular 2
Lessons • gitter.im/angular/angular
Thanks! • shuhei@gihtub&npm • shuheikagawa@twitter