Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Speaker Deck
PRO
Sign in
Sign up for free
Mobile Web Application 甘苦談
othree
October 27, 2013
Technology
6
1.4k
Mobile Web Application 甘苦談
othree
October 27, 2013
Tweet
Share
More Decks by othree
See All by othree
WAT JavaScript Date
othree
3
1.5k
Modern HTML Email Development
othree
3
2.4k
MRT & GIT
othree
1
1.5k
YAJS.vim and Vim Syntax Highlight
othree
1
2k
Web Trends to 2015
othree
4
260
Transducer
othree
9
2.4k
HITCON 11 Photographer
othree
4
350
fetch is the new XHR
othree
6
3.3k
TypeScript, future and past
othree
2
2k
Other Decks in Technology
See All in Technology
エンタープライズにおけるSRE立ち上げとNew Relic選定に至った背景とは / SRE Startup and New Relic in the Enterprise
tomoyakitaura
2
120
ISUCON で使えるツールを作った
shotakitazawa
0
350
5分で完全理解するGoのiota
uji
3
1.7k
AWS CloudShellという推しサービスについて / lt-20220502-jawsug-cli
becominn
0
630
開発者のための GitHub Organization の安全な運用と 継続的なモニタリング
flatt_security
2
1.5k
Deeplearning from almost scratch
hn410
0
570
フロントエンド初心者が Blazorを使ってみた / 20220428 C#Tokyo
takahiro901
0
200
モデリング、コンテキスト トランジション +1 / Data modeling
ishiayaya
0
110
SRE_チーム立ち上げから1年_気づいたら_SRE_っぽくない仕事まで貢献しちゃってる説
bitkey
PRO
0
1.6k
ZOZOTOWNのProduction Readiness Checklistと信頼性向上の取り組み / Improvement the reliability of ZOZOTOWN with Production Readiness Checklist
akitok_
5
1.3k
srenext2022-skaru
mixi_engineers
0
300
Building smarter apps with machine learning, from magic to reality
picardparis
4
3.1k
Featured
See All Featured
ピンチをチャンスに:未来をつくるプロダクトロードマップ #pmconf2020
aki_i
21
14k
Designing for Performance
lara
596
63k
Designing Dashboards & Data Visualisations in Web Apps
destraynor
224
49k
ParisWeb 2013: Learning to Love: Crash Course in Emotional UX Design
dotmariusz
100
5.9k
Building a Scalable Design System with Sketch
lauravandoore
447
30k
Code Reviewing Like a Champion
maltzj
506
37k
How to train your dragon (web standard)
notwaldorf
57
3.8k
Keith and Marios Guide to Fast Websites
keithpitt
404
21k
Building Your Own Lightsaber
phodgson
94
4.6k
Become a Pro
speakerdeck
PRO
3
770
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
37
3.2k
Principles of Awesome APIs and How to Build Them.
keavy
113
15k
Transcript
Mobile Web Application ⽢甘苦談 othree @ MOPCON 2013
me • @othree • MozTW member • PhD Candidate of
civil engineering • F2E at HTC • https://blog.othree.net/
• Front End related • Experience sharing • No code
listing
Why Mobile • We are HTC....
Mozilla Summit 2013
Mozilla Summit 2013
PM Says “We are going to support mobile browsers”
What We Thought • Web Standards rule the web •
Not big problem
Reality • Browser have bugs • Standard implementation not the
same • Ambiguous standards • Hard to debug on some browser • Any issue might be new, not like IE
Reality • Browser have bugs • Standard implementation not the
same • Ambiguous standards • Hard to debug on some browser • Any issue might be new, not like IE Survey
What browser you use on smartphone?
What browser you use on smartphone? b) You install browser
by yourself a) Default browser from your phone
Android Browser
Android Browser • No updates anymore • Google use Chrome
as new default • Still exists: HTC, Samsung Galaxy S3
Mozilla Summit 2013
• Have bugs, issues
S4 Chrome?
S4 Chrome?
None
Suggestion to Users • Use Chrome or Firefox or …
So...
So... Issues
Issues • No repaint • Ghost Click • Toggle location
bar will not trigger resize • preventDefault not work on touch event • HTML5 Video
Repaint • To save power, browser will reduce repaint •
It predicts best timing for repaint, what to repaint • Prediction might fail
If Not Repaint • Things will disappear, in wrong position...etc
Force Repaint • Access some attribute related to layout •
ex: offsetHeight
Ghost Click • Mobile device don’t have real ‘click’ event
• Simulate ‘click’ using touch events • ‘click’ has 300ms delay after ‘touchend’
Avoid Lag • Use ‘touchend’ • tap.js https://github.com/alexgibson/tap.js • fastbutton
https://developers.google.com/mobile/ articles/fast_buttons
But.. • Android Browser • Trigger simulated click on wrong
element
Demo
Location Bar • 3 states in Android Browser • show
• hide • pinned
Location Bar • 3 states in Android Browser • show
• hide • pinned
None
None
None
What’s the Deal • Window size changes • Trigger ‘resize’
event? • Android 2: Yes • Android 3: No http://www.quirksmode.org/dom/events/resize_mobile.html
Fix • Time Interval to check window size change •
200ms interval will cause video not play • Manuel trigger resize handler when window size might change
preventDefault • Can used to prevent user scroll web page
• Not work on HTC browser • Not a bug, its spec...
HTML5 Video • Loop not work • Play event not
reliable • Duration update issue • iPhone, iPod have different implementation
Loop • Video loop not work on all mobile browser
• But you can call `play()` on ‘ended’ event
Video Bugs • ‘play’, ‘playing’ event not reliable • Duration
have default value • Won't stop when buffer ready even if `pause()` were called
MOPCON 2013
pause() not work play() download buffer pause() buffer ready, play
playing play
RobustVideo • A video wrapper to fix issues above •
https://github.com/othree/robust-video
iPhone • Open native player to play HTML5 video
iPhone • Open native player to play HTML5 video
None
None
Limitation • Video needs visible to be able to play
• Poster will not used to render in web page • No video event is available
Limitation • Video needs visible to be able to play
• Poster will not used to render in web page • No video event is available
Tip • Video element outside of window • Tap img(poster)
to trigger `video.play()`
Tip • Video element outside of window • Tap img(poster)
to trigger `video.play()` <video> <img>
呼...
Next Time PM Says “We are going to support mobile
browsers”
We Say “Well, it takes x times longer to do
it.”
We Say “Well, it takes x times longer to do
it.” Mobile Debugging How to
Browsers • Safari • Chrome • Firefox/Opera • Android Browser
Safari • Enable Debug • Connect iDevice to your Mac
• Open Safari https://developer.apple.com/library/ios/documentation/AppleApplications/Reference/SafariWebContent/DebuggingSafarioniPhoneContent/DebuggingSafarioniPhoneContent.html
Chrome • Install the ADB Chrome extension • Install driver
of your device • Enable Debug • Connect device to PC/Mac https://developers.google.com/chrome-developer-tools/docs/remote-debugging
None
Firefox • https://hacks.mozilla.org/2012/08/remote- debugging-on-firefox-for-android/
Android Browser • Weinre http://people.apache.org/~pmuellr/weinre/ docs/latest/
None
None
None
None
None
Demo Q
Thanks