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
Things I've learnt from my Hacker News web app
Search
Lim Chee Aun
January 22, 2013
Technology
1
110
Things I've learnt from my Hacker News web app
A talk I gave at the Front-end Developers User Group meet up in Hackerspace SG.
Lim Chee Aun
January 22, 2013
Tweet
Share
More Decks by Lim Chee Aun
See All by Lim Chee Aun
Hacktoberfest SG 2018
cheeaun
0
110
CSS-ing the Super Silly Hackathon website
cheeaun
0
91
Bridging Connections
cheeaun
2
420
Other Decks in Technology
See All in Technology
チームを主語にしてみる / Making "Team" the Subject
ar_tama
4
310
Fargateを使った研修の話
takesection
0
130
とあるユーザー企業におけるリスクベースで考えるセキュリティ業務のお話し
4su_para
3
330
Apple/Google/Amazonの決済システムの違いを踏まえた定期購読課金システムの構築 / abema-billing-system
cyberagentdevelopers
PRO
1
220
独自ツール開発でスタジオ撮影をDX!「VLS(Virtual LED Studio)」 / dx-studio-vls
cyberagentdevelopers
PRO
1
180
10分でわかるfreeeのQA
freee
1
3.4k
Jr. Championsになって、強く連携しながらAWSをもっと使いたい!~AWSに対する期待と行動~
amixedcolor
0
190
Shift-from-React-to-Vue
calm1205
3
1.3k
国土交通省 データコンペ参加者向け勉強会
takehikohashimoto
0
140
AWS CDKでデータリストアの運用、どのように設計する?~Aurora・EFSの実践事例を紹介~/aws-cdk-data-restore-aurora-efs
mhrtech
4
670
オーティファイ会社紹介資料 / Autify Company Deck
autifyhq
9
120k
ガバメントクラウド先行事業中間報告を読み解く
sugiim
1
1.5k
Featured
See All Featured
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
167
49k
Why You Should Never Use an ORM
jnunemaker
PRO
53
9k
Making Projects Easy
brettharned
115
5.9k
Designing Experiences People Love
moore
138
23k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
14
1.9k
Mobile First: as difficult as doing things right
swwweet
222
8.9k
BBQ
matthewcrist
85
9.3k
Automating Front-end Workflow
addyosmani
1365
200k
Product Roadmaps are Hard
iamctodd
PRO
48
10k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.2k
Adopting Sorbet at Scale
ufuk
73
9k
The Pragmatic Product Professional
lauravandoore
31
6.3k
Transcript
Things I've learnt from my Things I've learnt from my
Hacker News web app Hacker News web app
Hello, I'm Chee Aun. • Hardcore web developer. • Created
quite a bunch of fun little side projects. • Tweet a lot of interesting stuff at @cheeaun • Occasionally read Hacker News.
What is Hacker News?
news.ycombinator.com news.ycombinator.com
I built HackerWeb.
HackerWeb • A simple read-only web app client for Hacker
News. • Mobile-optimized, iOS-optimized. • Works on all modern browsers, hopefully. • Check it out at hackerwebapp.com
None
None
None
Cutting-edge web tech -webkit-overflow-scrolling: touch, localStorage, sessionStorage, CORS, Application Cache,
CSS Animation, CSS Media Queries, Flexible Box Layout (old spec), requestAnimationFrame, Web Workers, and more…
Must-reads • How I built the Hacker News mobile web
app • How I built the Hacker News mobile web app, Part 2 • Introducing HackerWeb
Focus on 3 things 1. -webkit-overflow-scrolling: touch (Momentum scrolling) 2.
CORS (Cross-Origin Resource Sharing) 3. Application Cache
1 Momentum scrolling
-webkit-overflow-scrolling: touch • iOS-specific, for now. No official spec. •
Introduced since iOS5 (October 2011). • For overflow:scroll elements.
Before iOS5 • Two fingers to scroll overflow:scroll elements. •
Unintuitive and undiscoverable. • Scrolling libs to the rescue: iScroll, Scrollability, TouchScroll, FTScroller, etc
Starting from iOS5 • One finger to scroll overflow:scroll elements.
• -webkit-overflow-scrolling: touch adds momentum to it. • Scrolling libs are still in used due to bugs/quirks. • Bug: Can't scroll to top when tapping status bar
Demo time • Normal scrolling: jsbin.com/uhiyac/1 • Momentum scrolling: jsbin.com/uhiyac/2
Resources • Overthrow – overflow:auto polyfill • jQuery Mobile: touchOverflow
• Nested divs with overflow:touch
2 CORS
Before CORS • Use JSONP. • Request data from a
server in a different domain. • Example: json-head.appspot.com/? url=http://www.google.com/&callback=test • A “hack”.
CORS • A W3C Working Draft. • Allow JavaScript to
make cross-domain requests. • An interplay between the server and the client. Access-Control-Allow-Origin: *
Use CORS today!
Who implements CORS? • Google APIs • Amazon S3 •
YouTube API • Dropbox API • GitHub v3 API • …and more
Resources • Enable CORS • CORS isn’t just for XHR
• Can I use CORS? • Using CORS - HTML5 Rocks • CORS Proxy
3 Application Cache
AppCache • Easily make your web site/app offline. • A
working draft. • A douchebag.
Super simple steps Step 1. <html manifest="manifest.appcache"> Step 2. CACHE
MANIFEST index.html stylesheet.css …
Versioning CACHE MANIFEST # 2013-01-21:v1 index.html stylesheet.css …
Google Reader
Reeddit – Reddit web app client
Track AppCache versions Use Google Analytics' event tracking
Make local dev easier • Serve 404 for .appcache files
• For HackerWeb, I use node server.js -noappcache
Resources • A Beginner's Guide to Using the Application Cache
• Fixing Application Cache Community Group • Appcache Facts
More resources • Moobile – new mobile application framework built
on MooTools • Ratchet – Prototype iPhone apps with simple HTML, CSS and JS components • HTML5 Rocks • Can I use…
Thanks • cheeaun.com • twitter.com/cheeaun • github.com/cheeaun Images used in
this presentation • flickr.com/photos/diathesis/2262012694/