Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Things I've learnt from my Hacker News web app

Avatar for Lim Chee Aun Lim Chee Aun
January 22, 2013
Technology
1
120

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.

Avatar for Lim Chee Aun

Lim Chee Aun

January 22, 2013
Tweet

More Decks by Lim Chee Aun

See All by Lim Chee Aun
Hacktoberfest SG 2018
Avatar for Lim Chee Aun cheeaun
0
130
CSS-ing the Super Silly Hackathon website
Avatar for Lim Chee Aun cheeaun
0
100
Bridging Connections
Avatar for Lim Chee Aun cheeaun
2
460

Other Decks in Technology

See All in Technology
「Verify with Wallet API」を アプリに導入するために
Avatar for hinakko hinakko
1
250
自作LLM Native GORM Pluginで実現する AI Agentバックテスト基盤構築
Avatar for po3rin po3rin
2
270
AWSにおけるTrend Vision Oneの効果について
Avatar for shima shimak
0
130
Exadata Database Service on Dedicated Infrastructure(ExaDB-D) UI スクリーン・キャプチャ集
Avatar for oracle4engineer oracle4engineer
PRO
2
5.5k
Access-what? why and how, A11Y for All - Nordic.js 2025
Avatar for Geisy Domiciano gdomiciano
1
120
[2025-09-30] Databricks Genie を利用した分析基盤とデータモデリングの IVRy の現在地
Avatar for 和田 悠佑 wxyzzz
0
500
about #74462 go/token#FileSet
Avatar for tom twinkle tomtwinkle
1
430
E2Eテスト設計_自動化のリアル___Playwrightでの実践とMCPの試み__AIによるテスト観点作成_.pdf
Avatar for ファインディ株式会社（イベント資料アップ用） findy_eventslides
1
490
研究開発部メンバーの働き⽅ / Sansan R&D Profile
Avatar for Sansan, Inc. sansan33
PRO
3
20k
生成AIとM5Stack / M5 Japan Tour 2025 Autumn 東京
Avatar for you（@youtoy） you
PRO
0
230
英語は話せません！それでも海外チームと信頼関係を作るため、対話を重ねた2ヶ月間のまなび
Avatar for ニイオカ niioka_97
0
130
成長自己責任時代のあるきかた/How to navigate the era of personal responsibility for growth
Avatar for Hiromu Shioya kwappa
3
290

Featured

See All Featured
Build The Right Thing And Hit Your Dates
Avatar for Maggie C. maggiecrowley
37
2.9k
The Cost Of JavaScript in 2023
Avatar for Addy Osmani addyosmani
53
9k
It's Worth the Effort
Avatar for 3n 3n
187
28k
Bootstrapping a Software Product
Avatar for Garrett Dimon garrettdimon
PRO
307
110k
Evolution of real-time – Irina Nazarova, EuRuKo, 2024
Avatar for Irina Nazarova irinanazarova
9
960
Practical Tips for Bootstrapping Information Extraction Pipelines
Avatar for Matthew Honnibal honnibal
PRO
23
1.5k
Optimising Largest Contentful Paint
Avatar for Harry Roberts csswizardry
37
3.4k
Designing for humans not robots
Avatar for Tammie Lister tammielis
254
26k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
Avatar for Eileen M. Uchitelle eileencodes
26
3.1k
We Have a Design System, Now What?
Avatar for Morgane Peng morganepeng
53
7.8k
The Straight Up "How To Draw Better" Workshop
Avatar for Dennis Kardys denniskardys
237
140k
Intergalactic Javascript Robots from Outer Space
Avatar for Vicent Martí tanoku
273
27k

Transcript

  1. Things I've learnt from my Things I've learnt from my

    Hacker News web app Hacker News web app

  2. 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.

  3. What is Hacker News?

  4. news.ycombinator.com news.ycombinator.com

  5. I built HackerWeb.

  6. 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
  7. None
  8. None
  9. None

  10. 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…

  11. Must-reads • How I built the Hacker News mobile web

    app • How I built the Hacker News mobile web app, Part 2 • Introducing HackerWeb

  12. Focus on 3 things 1. -webkit-overflow-scrolling: touch (Momentum scrolling) 2.

    CORS (Cross-Origin Resource Sharing) 3. Application Cache

  13. 1 Momentum scrolling

  14. -webkit-overflow-scrolling: touch • iOS-specific, for now. No official spec. •

    Introduced since iOS5 (October 2011). • For overflow:scroll elements.

  15. Before iOS5 • Two fingers to scroll overflow:scroll elements. •

    Unintuitive and undiscoverable. • Scrolling libs to the rescue: iScroll, Scrollability, TouchScroll, FTScroller, etc

  16. 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

  17. Demo time • Normal scrolling: jsbin.com/uhiyac/1 • Momentum scrolling: jsbin.com/uhiyac/2

  18. Resources • Overthrow – overflow:auto polyfill • jQuery Mobile: touchOverflow

    • Nested divs with overflow:touch

  19. 2 CORS

  20. 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”.

  21. CORS • A W3C Working Draft. • Allow JavaScript to

    make cross-domain requests. • An interplay between the server and the client. Access-Control-Allow-Origin: *

  22. Use CORS today!

  23. Who implements CORS? • Google APIs • Amazon S3 •

    YouTube API • Dropbox API • GitHub v3 API • …and more

  24. Resources • Enable CORS • CORS isn’t just for XHR

    • Can I use CORS? • Using CORS - HTML5 Rocks • CORS Proxy

  25. 3 Application Cache

  26. AppCache • Easily make your web site/app offline. • A

    working draft. • A douchebag.

  27. Super simple steps Step 1. <html manifest="manifest.appcache"> Step 2. CACHE

    MANIFEST index.html stylesheet.css …

  28. Versioning CACHE MANIFEST # 2013-01-21:v1 index.html stylesheet.css …

  29. Google Reader

  30. Reeddit – Reddit web app client

  31. Track AppCache versions Use Google Analytics' event tracking

  32. Make local dev easier • Serve 404 for .appcache files

    • For HackerWeb, I use node server.js -noappcache

  33. Resources • A Beginner's Guide to Using the Application Cache

    • Fixing Application Cache Community Group • Appcache Facts

  34. 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…

  35. Thanks • cheeaun.com • twitter.com/cheeaun • github.com/cheeaun Images used in

    this presentation • flickr.com/photos/diathesis/2262012694/