Responsive Responsive Design Tutorial at Velocity NY

A9a379f2e92c7ded4564190c5b286b78?s=47 Tim Kadlec
October 14, 2013

Responsive Responsive Design Tutorial at Velocity NY

Presented at Velocity NY on October 14, 2013.

A9a379f2e92c7ded4564190c5b286b78?s=128

Tim Kadlec

October 14, 2013
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  1. Tim Kadlec @tkadlec 2012 Web Peformance Summit 8/29/2012 Responsive Responsive

    Design Building sites that are flexible and fast Velocity NY | October 14, 2013
  2. — 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
  3. None
  4. — 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
  5. More than layout

  6. — 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
  7. — 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
  8. — 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
  9. 74 requests, 1511kb 114 requests, 1200kb 99 requests, 1298kb 105

    requests, 5942kb
  10. http://www.guypo.com/uncategorized/real-world-rwd-performance-take-2/

  11. http://www.guypo.com/uncategorized/real-world-rwd-performance-take-2/

  12. http://www.guypo.com/uncategorized/real-world-rwd-performance-take-2/

  13. Revenue

  14. Revenue Traffic Conversions Satisfaction Page views

  15. 71% as quickly or faster http://www.gomez.com/resources/whitepapers/survey-report-what-users-want-from-mobile

  16. Performance is a fundamental component of the user experience.

  17. RWD is bad for performance!!!

  18. None
  19. Blame the implementation, not the technique. http://timkadlec.com/2012/10/blame-the-implementation-not-the-technique/

  20. None
  21. March 2012: 829kb http://www.stevesouders.com/blog/2013/04/05/page-weight-grows-24-year-over-year-not-44/

  22. March 2012: 829kb March 2013: 1031kb http://www.stevesouders.com/blog/2013/04/05/page-weight-grows-24-year-over-year-not-44/

  23. Performance needs to matter because it matters to users A

    culture of performance
  24. — 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.
  25. Set a performance budget

  26. Must be usable in <= 10s 65kB - 100kB

  27. 1. Optimize

  28. 1. Optimize 2. Remove

  29. 1. Optimize 2. Remove 3. Don’t Add

  30. Become a performance masochist Embrace the pain

  31. Get real, early

  32. — Brad Frost You can’t mock-up performance in Photoshop.

  33. — Brad Frost You can’t mock-up performance in Photoshop.

  34. None
  35. Or: Why I cry myself to sleep at night Responsive

    Images
  36. None
  37. 61%

  38. None
  39. 66%

  40. Trim the fat Compress any and all images

  41. None
  42. 23 images = 633.0 KB Before Compression

  43. 23 images = 597.4 KB After Compression

  44. 35.6 KB After Compression

  45. 11 CSS background images = 525.9 KB Before Compression

  46. 11 CSS background images = 317.1 KB After Compression

  47. 208.8KB After Compression

  48. 244.4 KB After Compression

  49. Show Not, Waste Not Don’t download things you don’t need

  50. display:none is useless

  51. <div id="test1"> <img src="images/test1.png" alt="" /> </div> @media all and

    (max-width: 600px) { #test1 { display:none; } }
  52. Everybody loads it anyway

  53. None
  54. None
  55. <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>

  56. <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>

  57. <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>

  58. <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>

  59. The preloader

  60. Decorative vs. content

  61. Appropriate images Make sure things are the right size and

    resolution
  62. 72%

  63. 255 values for red 255 values for green 255 values

    for blue 255 values for alpha
  64. 600px 600px

  65. 550px 550px

  66. (600 x 600) - (550 x 550) 57,500 pixels

  67. None
  68. None
  69. <picture width="500" height="500"> <source media="(min-width: 45em)" src="large.jpg"> <source media="(min-width: 18em)"

    src="med.jpg"> <source src="small.jpg"> <img src="small.jpg" alt=""> <p>Accessible text</p> </picture>
  70. <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>
  71. <img src="fallback.jpg" alt="" srcset="small.jpg 640w 1x, small-hd.jpg 640w 2x, med.jpg

    1x, med-hd.jpg 2x " />
  72. <img src="low-res.jpg" alt="" srcset="high-res.jpg 2x">

  73. LQIP http://www.guypo.com/feo/introducing-lqip-low-quality-image-placeholders/

  74. <img src="dummy.400x300.jpg" alt="Responsive Image" data-fullsrc="dummy.800x600.jpg" />

  75. Compressive

  76. http://blog.netvlies.nl/design-interactie/retina-revolution/

  77. SVG

  78. <img src="image.svg" onerror="this.onerror=null; this.src='image.png'">

  79. .main-header { background: url(logo.svg) no-repeat top left; background-size: contain; }

    .no-svg .main-header { background-image: url(logo.png); }
  80. 1. Analyze

  81. 1. Analyze 2. Big images first

  82. (600 x 600) - (550 x 550) 57,500 pixels

  83. (200 x 200) - (150 x 150) 17,500 pixels

  84. 57,500 / 17,500 = 3.2x

  85. 1. Analyze 2. Big images first 3. Know the trade-offs

  86. Actually, not so sucky Background images

  87. <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; } }
  88. <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; } }
  89. Load only what you need, when you need it Conditional

    loading
  90. 1. Content https://speakerdeck.com/andyhume/anatomy-of-a-responsive-page-load-whiskyweb-ii

  91. 1. Content https://speakerdeck.com/andyhume/anatomy-of-a-responsive-page-load-whiskyweb-ii 2. Enhancements

  92. 1. Content https://speakerdeck.com/andyhume/anatomy-of-a-responsive-page-load-whiskyweb-ii 2. Enhancements 3. Leftovers

  93. Cutting the mustard

  94. if ('querySelector' in document ! && 'localStorage' in window !

    && 'addEventListener' in window) { }
  95. http://bit.ly/RSrWVI

  96. http://bit.ly/RSrWVI

  97. http://bit.ly/RSrWVI

  98. globe.enhanced = ( ! respond.mediaQueriesSupported ! || globe.browser.ie6 ! ||

    globe.browser.ie7 ! || globe.browser.ie8 )
  99. None
  100. None
  101. None
  102. <h2> <a data-target="reviews" href="reviews.html">Reviews</a> </h2>

  103. anchorInclude : function ( elem ) { var url =

    elem.getAttribute('href'); var target = document.getElementById( elem.getAttribute('data-target') ); reqwest(url, function (resp) { target.innerHTML = resp; }); }
  104. <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
  105. $("[data-append],[data-replace],[data-after], [data-before]").ajaxInclude();

  106. No AJAX, no problem

  107. <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>
  108. 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; ! ! } ! } }
  109. What about CSS?

  110. Embedded a { ! text-decoration: none; } @media screen and

    (min-width: 1300px) { ! a { ! ! text-decoration: underline; ! } }
  111. External <link href="style.css" media="only screen and (min-width:

  112. Embedded External One HTTP request Many HTTP requests

  113. Embedded External One HTTP request Many HTTP requests Large file

    could be hard to maintain Organization can be easier
  114. Embedded External One HTTP request Many HTTP requests Large file

    could be hard to maintain Organization can be easier Extra weight, regardless of if needed Smaller CSS for device not supporting media queries
  115. Embedded External One HTTP request Many HTTP requests Large file

    could be hard to maintain Organization can be easier Extra weight, regardless of if needed Smaller CSS for device not supporting media queries All styles downloaded All styles downloaded (if media queries supported)
  116. http://scottjehl.github.com/CSS-Download-Tests/

  117. <link rel="stylesheet" href="style.css" media="seriously please do not download this what

    is the matter with you why won’t you listen" />
  118. None
  119. 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!
  120. Internet Explorer 10 Internet Explorer 9 Internet Explorer 8 Firefox

    20 Opera 12.15 Android 4.2.1 Opera Mobile Nooooo!
  121. Embedded External One HTTP request Many HTTP requests Large file

    could be hard to maintain Organization can be easier Extra weight, regardless of if needed Smaller CSS for device not supporting media queries All styles downloaded All styles downloaded (if media queries supported) Everything is in the critical path Browsers can optimize for the critical path
  122. Go vanilla

  123. https://twitter.com/ppk/status/249100988693241856

  124. https://twitter.com/ppk/status/249100988693241856

  125. jQuery = 200-300ms based on 1.8.0 http://jsperf.com/zepto-jq-eval

  126. Up to 8s!

  127. Custom jQuery builds

  128. Everything has a trade-off

  129. None
  130. What value does this provide?

  131. Don’t worry about JS library size? Just include one less

    image?
  132. Worry about JS library size and include one less image.

  133. Smart defaults

  134. RESS

  135. If you only knew the power of the Dark Side!

    RESS
  136. This @#$% ain’t easy

  137. UA detection is evil!

  138. Browsers are like fishermen

  139. None
  140. None
  141. None
  142. Blame the implementation, not the technique.

  143. None
  144. 82% of Alexa top 100 sites use some form of

    server-side detection http://mobiforge.com/designing/blog/server-side-device-detection-used-82-alexa-top-100-sites
  145. <?php // instantiate client include 'DeviceAtlasCloud/Client.php'; // fetch props $results

    = DeviceAtlasCloudClient::getDeviceData(); // store result $props = $results['properties']; // set $width to correct width or "" if unknown $width = (isset($props['displayWidth'])) ? $props['displayWidth'] :""; ?> http://mobile.smashingmagazine.com/2013/10/08/responsive-website-design-with-ress/
  146. <img src="slide-01.jpg" width="<?php echo $width; ?>" alt="image description" /> http://mobile.smashingmagazine.com/2013/10/08/responsive-website-design-with-ress/

  147. // check network performance require_once 'DeviceAtlasNPC.php'; session_start(); // instantiate NPC

    $deviceAtlasNPC = new DeviceAtlasNPC(); // test network performance $quality = $deviceAtlasNPC->getQuality(); http://mobile.smashingmagazine.com/2013/10/08/responsive-website-design-with-ress/
  148. $path = $_SERVER['SCRIPT_NAME']; switch($quality) { case DeviceAtlasNPC::HIGH_QUALITY: if ($_SERVER['HTTP_HOST'] ==

    'lo.site.com') { header("Location: http://site.com".$path ); } break; case DeviceAtlasNPC::MEDIUM_QUALITY: if ($_SERVER['HTTP_HOST'] == 'lo.site.com') { header("Location: http://site.com".$path ); } break; case DeviceAtlasNPC::LOW_QUALITY: if ($_SERVER['HTTP_HOST'] == 'site.com') { header("Location: http://lo.site.com".$path ); } break; default: } http://mobile.smashingmagazine.com/2013/10/08/responsive-website-design-with-ress/
  149. <?php if ($device->getCapability('has_cellular_radio') === 'true') { ! if ($device->getCapability('xhtml_make_phone_call_string') !==

    'none') { ! ! $wireless = true; ! ! $method = $device->getCapability('xhtml_make_phone_call_string'); ! } else { ! ! $wireless = false; ! } } else { ! $wireless = false; } ?>
  150. var features = {}; if (Utils.readCookie('features')) { ! features =

    Utils.readCookie('features'); ! features = JSON.parse(features); } else { ! features['width'] = Utils.tests.getWidth(); ! Utils.createCookie('features', JSON.stringify(features)); }
  151. <?php if (isset($_COOKIE['features'])) { ! $feature = json_decode($_COOKIE['features']); } if

    ($feature->width) { ! $width = $feature->width; } else { ! $width = $device->getCapability('resolution_width'); } ?>
  152. Client Hints https://github.com/igrigorik/http-client-hints

  153. CH-DPR: 2.00

  154. Time to move beyond just visual aesthetics

  155. Talk about it

  156. This may not be easy...

  157. ...but man is it fun!

  158. thank you! @tkadlec timkadlec.com TIM KADLEC

  159. implementingresponsivedesign.com