Why Mobile Web Still Sucks

Transcript

1. Why Mobile Web Still Sucks? Ilya Pukhalski May MMXIV

2. @pukhalski ! Solution Architect, EPAM Systems Lecturer, British Higher School

   of Art & Design

3. % of time spent 2013 2014 14 20 86 80

   Apps Mobile Web

4. Why apps? • Easy to control over stores • Rich-get-richer

   dynamics • Easier to retain users
5. None
6. None

7. HTML5 vs Native on mobile Web

8. Watch your language • HTML5 is a marketing buzzword •

   Responsive Web Design doesn’t exist Good design is responsive by default.

9. What is web?

10. – Wiki “Web is a system of interlinked “hypertext documents

    that run “on and are accessed “via the Internet.”
11. None

12. Custom URL schemas • fb://profile/(fbid) • tel:+180022933 • twitter://username •

    …

13. applinks.org

14. Native is a part of Web ecosystem

15. What is native?

16. “Native — software or data “formats supported by a certain

    “system with minimal overhead “and additional components” – Wiki

17. Web technologies are native for browsers

18. Browsers are responsible for standards support

19. Apps boom Do you remember dot-com boom?

20. Why do we love apps? • Push Notifications • Offline

    Mode • Performance ! ! • Look & Feel • Distribution • Background Sync

21. Look & Feel

22. famo.us

23. None

24. Touch Events, Pointer Events, Mouse Events

25. ~300ms delay

26. tap.js

27. document .getElementById('any-element') .addEventListener('tap', function (e) { // All the magic

    happens here }); $('#any-element').on('tap', function (e) { // All the magic happens here });

28. Performance

29. Heavy DOM

30. Facebook React.js Model DOM Virtual DOM Redraw on requestAnimationFrame Changes

    Changes Changes

31. Animations

32. 2010-2013

33. 2014

34. requestAnimationFrame

35. None
36. None

37. element.animate([ {cssProperty: value0}, {cssProperty: value1}, {cssProperty: value2}, //... ], {

    duration: timeInMs, iterations: iterationCount, delay: delayValue });

38. Offline Mode

39. Cache Manifest

40. A declarative way CACHE MANIFEST # 2012-02-21 v1.0.0 /theme.css /logo.png

    /main.js ! NETWORK: login.asp ! FALLBACK: /html/ /offline.html

41. A mess CACHE MANIFEST # v1 index.html js/lib/mapbox.js js/lib/iscroll.min.js js/lib/jquery/dist/jquery.min.js

    js/lib/backbone/backbone.min.js js/lib/underscore/underscore.min.js js/xf.min.js js/app.js styles/xf.min.css styles/app.css styles/mapbox.css js/components/PointsList.js tmpl/desktop/PointsList.tmpl tmpl/mobile/PointsList.tmpl js/components/PointsMap.js https://api.tiles.mapbox.com/mapbox.js/v1.6.1/images/icons-000000.png http://api.tiles.mapbox.com/mapbox.js/v1.6.1/images/icons-000001.png http://api.tiles.mapbox.com/mapbox.js/v1.6.1/images/icons-000002.png http://api.tiles.mapbox.com/mapbox.js/v1.6.1/images/icons-000003.png http://api.tiles.mapbox.com/mapbox.js/v1.6.1/images/icons-000004.png http://api.tiles.mapbox.com/mapbox.js/v1.6.1/images/icons-000005.png http://a.tiles.mapbox.com/v3/witchfinderx.hb934388.json http://a.tiles.mapbox.com/v3/marker/pin-s-fuel+fc4353.png http://a.tiles.mapbox.com/v3/marker/pin-m-circle+f0a.png NETWORK: http://api.tomtom.com/ http://a.tiles.mapbox.com/ http://b.tiles.mapbox.com/ http://c.tiles.mapbox.com/

42. Debugging hell 1. Change the code 2. Change manifest 3.

    Clean cache 4. Debug 5. GOTO 1
43. None

44. Meet Service Worker

45. Event-driven scripts that run independently of web pages

46. • Handling resource requests • Foundation for other standards

47. navigator.serviceWorker.register('/worker.js') .then(function(serviceWorker) { // To use the serviceWorker immediately, //

    you might call window.location.reload() });

48. var base = "https://videos.example.com"; var inventory = new URL("/inventory.json", base)

    + ""; ! ! this.addEventListener("fetch", function(e) { var url = e.request.url; if (url == inventory) { e.respondWith(new Response({ statusCode: 200, body: JSON.stringify({ videos: { /* ... */ } }) })); } });

49. var base = "https://videos.example.com"; ! this.addEventListener("install", function(e) { ! var

    cachedResources = new Cache( base + "/base.css", base + "/app.js", base + "/logo.png" ); ! ! e.waitUntil(cachedResources.ready()); ! ! caches.set("videos-cache", cachedResources); });

50. this.addEventListener("fetch", function(e) { ! e.respondWith( caches.match(e.request, “videos-cache") ); });

51. var base = "https://videos.example.com"; var inventory = new URL("/inventory.json", base)+"";

    ! this.addEventListener("fetch", function(e) { var url = e.request.url; if (url == inventory) { e.respondWith( fetch(url).then( null, function() { return caches.match(inventory); } ) ); } });

52. Distribution

53. Stores • App Store • Google Play • BlackBerry AppWorld

    • Amazon Appstore • EPAM Mobile Appstore

54. Stores • App Store • Google Play • BlackBerry AppWorld

    • Amazon Appstore • EPAM Mobile Appstore

55. Will you install an app to buy a car?

56. None
57. None
58. None

59. Install this app

60. navigator .mozApps .install("path/to/manifest");

61. Notifications

62. Web Notifications

63. var Notification = window.Notification || window.mozNotification || window.webkitNotification; ! Notification.requestPermission(

    function (permission) { // console.log(permission); } );

64. ! var notification = new Notification( "SEC Spring 2014", {

    body: "I hope you enjoy the conference" } ); ! notification.onclick = function () { // Something to do };

65. • Opened website • Client-side only

66. Safari Remote Notifications

67. The Flow • Request permissions • Register the device •

    Send notifications

68. {! ! "aps": {! ! "alert": {! ! "title": "Flight

    A998 Now Boarding",! ! "body": "Boarding has begun for Flight A998.",! ! "action": "View"! ! },! ! "url-args": ["boarding", "A998"]! ! }! ! }!

69. • Server-side • Offline

70. Service Worker Push Notifications

71. The Flow • Register locally • Register on the server

    side • Send notifications

72. navigator.serviceWorker.register("/sw.js"); ! navigator.serviceWorker.whenReady().then(function(sw) { ! navigator.push.has("regId").catch(function() { navigator.push.register({ sender: {

    // sender data... } }); }).then(function (registration) { asyncXHR( "http://example.com/push/activate" + toQueryString(registration); ); }); });

73. this.onpush = function(e) { console.log(e.message.data); // Cache the data //

    ... }

74. Background Sync

75. Service Worker? Yes!

76. navigator.serviceWorker.register("/sw.js"); ! ! navigator.serviceWorker.whenReady() .then(function(sw) { ! navigator.registerSync( "id", {

    interval: 'daily', data: '', description: '', lang: '', dir: '' } ); });

77. this.onsync = function(event) { var data = JSON.parse(event.data); ! if

    (event.id === "id") { // make something with data } };

78. How to make mobile web suck less?

79. Blame the implementation, not technique

80. Thanks @pukhalski Ilya_Pukhalski@epam.com