Responsive Responsive Design at Peachpit Presents

Presented for Peachpit Presents on January 16, 2014

Transcript

1. Responsive Responsive Design Building sites that are flexible and fast Peachpit Presents | January 16, 2014
3. 20% in 5 days
4. 15% in 24 hours
5. 18% in 24 hours
6. Most popular in 3 days
7. 6 months. 681,900 Android devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . source: http://opensignal.com/reports/fragmentation.php
8. Source: http://stephanierieger.com/the-trouble-with-android/
10. “I want the entire smartphone, the entire internet, on my wrist.”
16. @media [not|only] type [and] (expression) { ... }
17. @media only screen and (min-width: 400px) { ... }
21. — Ethan Marcotte Now more than ever, we’re designing work meant to be viewed along a gradient of different experiences. Responsive web design offers us a way forward, finally allowing us to “design for the ebb and flow of things. http://alistapart.com/article/responsive-web-design
26. — John Allsopp The control which designers know in the print medium, and often desire in the web medium, is simply a function of the limitation of the printed page. We should embrace the fact that the web doesn’t have the same constraints, and design for this flexibility. http://alistapart.com/article/dao
27. More than layout
28. Too good a job?
29. — Ethan Marcotte Now more than ever, we’re designing work meant to be viewed along a gradient of different experiences. Responsive web design offers us a way forward, finally allowing us to “design for the ebb and flow of things. gradient of different experiences http://alistapart.com/article/responsive-web-design
30. — Ethan Marcotte Now more than ever, we’re designing work meant to be viewed along a gradient of different experiences. Responsive web design offers us a way forward, finally allowing us to “design for the ebb and flow of things. gradient of different experiences http://alistapart.com/article/responsive-web-design
31. — Stephanie Rieger Shoot me now…responsive design has seemingly become confused with an opportunity to reduce performance rather than improve it. https://twitter.com/stephanierieger/status/245240465572642816
33. 74 requests, 1511kb 114 requests, 1200kb 99 requests, 1298kb 105 requests, 5942kb
34. http://www.guypo.com/uncategorized/real-world-rwd-performance-take-2/ 72% 22% 6% Much Smaller Slightly Smaller Same Size
35. http://www.guypo.com/uncategorized/real-world-rwd-performance-take-2/ 320x480 640x960 1024x768 1600x1200 0 200000 400000 600000 800000 1000000 1200000 1400000
36. http://www.guypo.com/uncategorized/real-world-rwd-performance-take-2/ 320x480 640x960 1024x768 1600x1200 0 200000 400000 600000 800000 1000000 1200000 1400000
37. Revenue
38. Revenue Traffic Conversions Satisfaction Page views
39. 71% as quickly or faster http://www.gomez.com/resources/whitepapers/survey-report-what-users-want-from-mobile
40. Performance is a fundamental component of User Experience
41. RWD is bad for performance!
43. Blame the implementation, not the technique.
44. January 2012: 814.68kb January 2013: 1062.63kb http://www.stevesouders.com/blog/2013/04/05/page-weight-grows-24-year-over-year-not-44/
45. 30%
46. Performance needs to matter because it matters to users A culture of performance
47. — A friend I doubt anyone really wants to release a site that doesn't perform well, it's just a product of not being afforded the luxury of time and top-down pressure.
48. Set a performance budget
49. Must be usable in <= 10s 65kB - 100kB
50. 1. Optimize
51. 1. Optimize 2. Remove
52. 1. Optimize 2. Remove 3. Don’t Add
53. Channel your inner performance masochist Embrace the pain
54. Get real, early
55. — Brad Frost You can’t mock-up performance in Photoshop.
56. — Brad Frost You can’t mock-up performance in Photoshop.
57. Or: Why I cry myself to sleep at night Responsive Images
58. Compress any and all images Trim the fat
60. Savings after compression 244.4 KB
62. Don’t download things you don’t need Show not, waste note
63. display:none is useless
64. <div id="test1"> <img src="images/test1.png" alt="" /> </div> @media all and (max-width: 600px) { #test1 { display:none; } }
65. Everybody loads it anyway
66. <img class="lazyImg 4x3" data-include-size="medium" data-replace-src="/img/cat-in-hat.jpg" src="/img/4x3.png" />
67. for (var i = lazy.length - 1; i >= 0; i--) { ! var includeSize = lazy[i].getAttribute('data-include-size'); ! ! ! ! ! if (!includeSize) { ! ! return; ! } ! if (includeSize[j].trim() == MQ) { ! ! lazy.length[i].src = lazy.length[i].getAttribute('data- replace-src'); ! ! return; ! } }
69. <div class="delayed-image-load" data-src="http://ichef.bbci.co.uk/news/200/ media/images/64664000/jpg/ 64664041_016703869.jpg" data-width="521" data-height="293"></div>
70. <div class="delayed-image-load" data-src="http://ichef.bbci.co.uk/news/200/ media/images/64664000/jpg/ 64664041_016703869.jpg" data-width="521" data-height="293"></div>
71. <div class="delayed-image-load" data-src="http://ichef.bbci.co.uk/news/200/ media/images/64664000/jpg/ 64664041_016703869.jpg" data-width="521" data-height="293"></div>
72. <div class="delayed-image-load" data-src="http://ichef.bbci.co.uk/news/200/ media/images/64664000/jpg/ 64664041_016703869.jpg" data-width="521" data-height="293"></div>
73. Make sure things are the right size and resolution Appropriate images
74. 72%
75. 255 values for red 255 values for green 255 values for blue 255 values for alpha
76. 600px
77. 550px
78. (600 x 600) - (550 x 550) 57,500 pixels
80. <span data-picture data-alt="A giant stone face at The Bayon temple in Angkor Thom, Cambodia"> <span data-src="small.jpg"></span> <span data-src="medium.jpg" data-media="(min-width: 400px)"></span> <span data-src="large.jpg" data-media="(min-width: 800px)"></span> <span data-src="extralarge.jpg" data-media="(min-width: 1000px)"></span> <!-- Fallback content for non-JS browsers. Same img src as the initial, unqualified source element. --> <noscript> <img src="external/imgs/small.jpg" alt="A giant stone face at The Bayon temple in Angkor Thom, Cambodia"> </noscript> </span>
81. L.Q.I.P Low Quality Image Placeholders
82. <img src="dummy.400x300.jpg" alt="Responsive Image" data-fullsrc="dummy.800x600.jpg" />
83. Compressive Images AKA Black Magic
84. http://blog.netvlies.nl/design-interactie/retina-revolution/
85. SVG
86. <img src="image.svg" onerror="this.onerror=null; this.src='image.png'">
87. .main-header { background: url(logo.svg) no-repeat top left; background-size: contain; } .no-svg .main-header { background-image: url(logo.png); }
88. 1. Analyze
89. 1. Analyze 2. Big images first
90. (600 x 600) - (550 x 550) 57,500 pixels
91. (200 x 200) - (150 x 150) 17,500 pixels
92. 57,500 / 17,500 = 3.2x
93. 1. Analyze 2. Big images first 3. Know the trade-offs
94. Actually, not so sucky Background images
95. <div id="test3"> <div></div> </div> #test3 div { background-image:url('images/test3.png'); width:200px; height:75px; } @media all and (max-width: 600px) { #test3 { display:none; } }
96. <div id="test5"></div> @media all and (min-width: 601px) { #test5 { background-image:url('images/test5-desktop.png'); width:200px; height:75px; } } @media all and (max-width: 600px) { #test5 { background-image:url('images/test5-mobile.png'); width:200px; height:75px; } }
97. Load only what you need, when you need it Conditional loading
98. 1. Content https://speakerdeck.com/andyhume/anatomy-of-a-responsive-page-load-whiskyweb-ii
99. 1. Content https://speakerdeck.com/andyhume/anatomy-of-a-responsive-page-load-whiskyweb-ii 2. Enhancements
100. 1. Content https://speakerdeck.com/andyhume/anatomy-of-a-responsive-page-load-whiskyweb-ii 2. Enhancements 3. Leftovers
101. Cutting the mustard
102. if ('querySelector' in document ! && 'localStorage' in window ! && 'addEventListener' in window) { ... }
103. http://bit.ly/RSrWVI
104. http://bit.ly/RSrWVI
105. http://bit.ly/RSrWVI
106. globe.enhanced = ( ! respond.mediaQueriesSupported ! || globe.browser.ie6 ! || globe.browser.ie7 ! || globe.browser.ie8 )
110. <h2> <a data-target="reviews" href="reviews.html">Reviews</a> </h2>
111. anchorInclude : function ( elem ) { var url = elem.getAttribute('href'); var target = document.getElementById( elem.getAttribute('data-target') ); reqwest(url, function (resp) { target.innerHTML = resp; }); }
112. <a href="..." data-replace="articles/latest/fragment">Latest Articles</a> <a href="..." data-before="articles/latest/fragment">Latest Articles</a> <a href="..." data-after="articles/latest/fragment">Latest Articles</a> <a href="..." data-append="articles/latest/fragment">Latest Articles</a>
113. $("[data-append],[data-replace],[data-after], [data-before]").ajaxInclude();
114. No AJAX, no problem
115. <div data-lazy-content="more_puppies" aria- live="polite"> <!-- <p>You clicked for more puppies! Here you go:</p> <img src="puppy.jpg" alt="Lazy loaded puppy image" /> --> </div>
116. var toShow = document.querySelectorAll('[data-lazy-content=' + item.getAttribute('[data-lazy-reveal]') + ']'; for (var j = toShow.length - 1; j >= 0; j--) { ! var children = toShow[j].childNodes; ! for (var k = children.length - 1; k >= 0; k--) { ! ! var child = children[k]; ! ! if (child.nodeType === 8) { ! ! ! //it's a comment ! ! ! toShow[j].innerHTML = child.nodeValue; ! ! ! break; ! ! } ! } }
117. What about CSS?
118. Embedded a { ! text-decoration: none; } @media screen and (min-width: 1300px) { ! a { ! ! text-decoration: underline; ! } }
119. External <link href="style.css" media="only screen and (min-width: 1300px)" />
120. All styles downloaded
121. http://scottjehl.github.com/CSS-Download-Tests/
122. <link rel="stylesheet" href="style.css" media="seriously please do not download this what is the matter with you why won’t you listen" />
124. Chrome 26 Safari 6.0.2 iOS Safari 6.1 Android 4.2.1 Android 4.2.1 Chrome 18 Android 4.2.1 Chrome 18 Android 4.2.1 Opera Mini Yay!
125. Internet Explorer 10 Internet Explorer 9 Internet Explorer 8 Firefox 20 Opera 12.15 Android 4.2.1 Opera Mobile Nooooo!
126. https://twitter.com/ppk/status/249100988693241856
127. jQuery = 200-300ms based on 1.8.0 http://jsperf.com/zepto-jq-eval
128. Up to 8s!
129. Custom jQuery builds
130. Everything has a trade-off
132. What value does this provide?
133. Don’t worry about JS size. Just include one less image.
134. Don’t worry about JS size and Just include one less image.
135. Time to move beyond visual aesthetics
136. This may not be easy...
137. ...but man is it fun!
138. thank you! @tkadlec timkadlec.com TIM KADLEC
139. implementingresponsivedesign.com peachpit.com/deals