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
97
Bridging Connections
Avatar for Lim Chee Aun cheeaun
2
450

Other Decks in Technology

See All in Technology
20250707-AI活用の個人差を埋めるチームづくり
Avatar for shnjtk shnjtk
6
4.1k
microCMSではじめるAIライティング
Avatar for himaratsu himaratsu
0
120
推し書籍📚 / Books and a QA Engineer
Avatar for akihisa1210 ak1210
0
120
AWS CDK 開発を成功に導くトラブルシューティングガイド
Avatar for Ryota Nakajima wandora58
3
170
Delegating the chores of authenticating users to Keycloak
Avatar for Alexander Schwartz ahus1
0
180
United Airlines Customer Service– Call 1-833-341-3142 Now!
Avatar for vivankilkenny548+imnfc airhelp
0
180
cdk initで生成されるあのファイル達は何なのか/cdk-init-generated-files
Avatar for tomoki10 tomoki10
1
540
インフラ寄りSREの生存戦略
Avatar for SansanTech sansantech
PRO
9
3.4k
いつの間にか入れ替わってる！？新しいAWS Security Hubとは？
Avatar for cm-usuda-keisuke cmusudakeisuke
0
160
オーティファイ会社紹介資料 / Autify Company Deck
Avatar for Autify autifyhq
10
130k
IPA&AWSダブル全冠が明かす、人生を変えた勉強法のすべて
Avatar for iwamot iwamot
PRO
2
220
SREのためのeBPF活用ステップアップガイド
Avatar for Sohei Iwahori egmc
2
900

Featured

See All Featured
The Art of Delivering Value - GDevCon NA Keynote
Avatar for David Neal reverentgeek
15
1.6k
[Rails World 2023 - Day 1 Closing Keynote] - The Magic of Rails
Avatar for Eileen M. Uchitelle eileencodes
35
2.4k
Measuring & Analyzing Core Web Vitals
Avatar for Philip Tellis bluesmoon
7
510
Building Better People: How to give real-time feedback that sticks.
Avatar for Will Jessup wjessup
367
19k
BBQ
Avatar for Matthew Crist matthewcrist
89
9.7k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
Avatar for Kevin Liebholz kevinliebholz
34
5.9k
Why Our Code Smells
Avatar for Brandon Keepers bkeepers
PRO
336
57k
GraphQLの誤解/rethinking-graphql
Avatar for sonatard sonatard
71
11k
Embracing the Ebb and Flow
Avatar for Simon Collison colly
86
4.7k
Documentation Writing (for coders)
Avatar for Carmen Chung carmenintech
72
4.9k
How GitHub (no longer) Works
Avatar for Zach Holman holman
314
140k
The World Runs on Bad Software
Avatar for Brandon Keepers bkeepers
PRO
69
11k

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/