Repository with sources and generator of https://larlet.fr/david/ https://larlet.fr/david/
Вы не можете выбрать более 25 тем Темы должны начинаться с буквы или цифры, могут содержать дефисы(-) и должны содержать не более 35 символов.

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595
  1. <!doctype html><!-- This is a valid HTML5 document. -->
  2. <!-- Screen readers, SEO, extensions and so on. -->
  3. <html lang=en>
  4. <!-- Has to be within the first 1024 bytes, hence before the <title>
  5. See: https://www.w3.org/TR/2012/CR-html5-20121217/document-metadata.html#charset -->
  6. <meta charset=utf-8>
  7. <!-- Why no `X-UA-Compatible` meta: https://stackoverflow.com/a/6771584 -->
  8. <!-- The viewport meta is quite crowded and we are responsible for that.
  9. See: https://codepen.io/tigt/post/meta-viewport-for-2015 -->
  10. <meta name=viewport content="width=device-width,minimum-scale=1,initial-scale=1,shrink-to-fit=no">
  11. <!-- Required to make a valid HTML5 document. -->
  12. <title>The Amish and cars — David Larlet</title>
  13. <!-- Generated from https://realfavicongenerator.net/ such a mess. -->
  14. <link rel="apple-touch-icon" sizes="180x180" href="/static/david/icons/apple-touch-icon.png">
  15. <link rel="icon" type="image/png" sizes="32x32" href="/static/david/icons/favicon-32x32.png">
  16. <link rel="icon" type="image/png" sizes="16x16" href="/static/david/icons/favicon-16x16.png">
  17. <link rel="manifest" href="/manifest.json">
  18. <link rel="mask-icon" href="/static/david/icons/safari-pinned-tab.svg" color="#5bbad5">
  19. <link rel="shortcut icon" href="/static/david/icons/favicon.ico">
  20. <meta name="apple-mobile-web-app-title" content="David Larlet">
  21. <meta name="application-name" content="David Larlet">
  22. <meta name="msapplication-TileColor" content="#da532c">
  23. <meta name="msapplication-config" content="/static/david/icons/browserconfig.xml">
  24. <meta name="theme-color" content="#f0f0ea">
  25. <!-- That good ol' feed, subscribe :p. -->
  26. <link rel=alternate type="application/atom+xml" title=Feed href="/david/log/">
  27. <!-- Canonical URL for SEO purposes -->
  28. <link rel="canonical" href="https://larlet.fr/david/stream/2018/06/18/">
  29. <style>
  30. /* http://meyerweb.com/eric/tools/css/reset/ */
  31. html, body, div, span,
  32. h1, h2, h3, h4, h5, h6, p, blockquote, pre,
  33. a, abbr, address, big, cite, code,
  34. del, dfn, em, img, ins,
  35. small, strike, strong, tt, var,
  36. dl, dt, dd, ol, ul, li,
  37. fieldset, form, label, legend,
  38. table, caption, tbody, tfoot, thead, tr, th, td,
  39. article, aside, canvas, details, embed,
  40. figure, figcaption, footer, header, hgroup,
  41. menu, nav, output, ruby, section, summary,
  42. time, mark, audio, video {
  43. margin: 0;
  44. padding: 0;
  45. border: 0;
  46. font-size: 100%;
  47. font: inherit;
  48. vertical-align: baseline;
  49. }
  50. /* HTML5 display-role reset for older browsers */
  51. article, aside, details, figcaption, figure,
  52. footer, header, hgroup, menu, nav, section { display: block; }
  53. body { line-height: 1; }
  54. blockquote, q { quotes: none; }
  55. blockquote:before, blockquote:after,
  56. q:before, q:after {
  57. content: '';
  58. content: none;
  59. }
  60. table {
  61. border-collapse: collapse;
  62. border-spacing: 0;
  63. }
  64. /* http://practicaltypography.com/equity.html */
  65. /* https://calendar.perfplanet.com/2016/no-font-face-bulletproof-syntax/ */
  66. /* https://www.filamentgroup.com/lab/js-web-fonts.html */
  67. @font-face {
  68. font-family: 'EquityTextB';
  69. src: url('/static/david/css/fonts/Equity-Text-B-Regular-webfont.woff2') format('woff2'),
  70. url('/static/david/css/fonts/Equity-Text-B-Regular-webfont.woff') format('woff');
  71. font-weight: 300;
  72. font-style: normal;
  73. font-display: swap;
  74. }
  75. @font-face {
  76. font-family: 'EquityTextB';
  77. src: url('/static/david/css/fonts/Equity-Text-B-Italic-webfont.woff2') format('woff2'),
  78. url('/static/david/css/fonts/Equity-Text-B-Italic-webfont.woff') format('woff');
  79. font-weight: 300;
  80. font-style: italic;
  81. font-display: swap;
  82. }
  83. @font-face {
  84. font-family: 'EquityTextB';
  85. src: url('/static/david/css/fonts/Equity-Text-B-Bold-webfont.woff2') format('woff2'),
  86. url('/static/david/css/fonts/Equity-Text-B-Bold-webfont.woff') format('woff');
  87. font-weight: 700;
  88. font-style: normal;
  89. font-display: swap;
  90. }
  91. @font-face {
  92. font-family: 'TriplicateT4c';
  93. src: url('/static/david/css/fonts/Triplicate-T4-Code-Regular-webfont.woff2') format('woff2'),
  94. url('/static/david/css/fonts/Triplicate-T4-Code-Regular-webfont.woff') format('woff');
  95. font-weight: 300;
  96. font-style: normal;
  97. font-display: swap;
  98. }
  99. /* http://practice.typekit.com/lesson/caring-about-opentype-features/ */
  100. body {
  101. /* http://www.cssfontstack.com/ Palatino 99% Win 86% Mac */
  102. font-family: "EquityTextB", Palatino, serif;
  103. background-color: #f0f0ea;
  104. color: #07486c;
  105. font-kerning: normal;
  106. -moz-osx-font-smoothing: grayscale;
  107. -webkit-font-smoothing: subpixel-antialiased;
  108. text-rendering: optimizeLegibility;
  109. font-variant-ligatures: common-ligatures contextual;
  110. font-feature-settings: "kern", "liga", "clig", "calt";
  111. }
  112. pre, code, kbd, samp, var, tt {
  113. font-family: 'TriplicateT4c', monospace;
  114. }
  115. em {
  116. font-style: italic;
  117. color: #323a45;
  118. }
  119. strong {
  120. font-weight: bold;
  121. color: black;
  122. }
  123. nav {
  124. background-color: #323a45;
  125. color: #f0f0ea;
  126. display: flex;
  127. justify-content: space-around;
  128. padding: 1rem .5rem;
  129. }
  130. nav:first-child {
  131. border-top: 1vh solid #2d7474;
  132. }
  133. nav:last-child {
  134. border-bottom: 1vh solid #2d7474;
  135. }
  136. nav a {
  137. color: #f0f0ea;
  138. }
  139. nav abbr {
  140. border-bottom: 1px dotted white;
  141. }
  142. h1 {
  143. border-bottom: .2vh solid #2d7474;
  144. background-color: #e3e1e1;
  145. color: #323a45;
  146. text-align: center;
  147. padding: 2rem 0 1rem;
  148. width: 100%;
  149. }
  150. h2 {
  151. margin: 4rem 0 1rem;
  152. border-top: .2vh solid #2d7474;
  153. }
  154. h3 {
  155. text-align: center;
  156. margin: 3rem 0 .75em;
  157. }
  158. hr {
  159. height: .4rem;
  160. width: .4rem;
  161. border-radius: .4rem;
  162. background: #07486c;
  163. margin: 2.5rem auto;
  164. }
  165. time {
  166. display: bloc;
  167. background-color: #2d7474;
  168. color: #e3e1e1;
  169. padding: .29rem 1rem;
  170. float: right;
  171. }
  172. ul, ol {
  173. margin: 2rem;
  174. }
  175. ul {
  176. list-style-type: square;
  177. }
  178. a {
  179. text-decoration-skip-ink: auto;
  180. }
  181. article {
  182. max-width: 50rem;
  183. display: flex;
  184. flex-direction: column;
  185. margin: 3rem auto 1rem auto;
  186. }
  187. article p:last-child {
  188. margin-bottom: 1rem;
  189. }
  190. p {
  191. padding: 0 .5rem;
  192. }
  193. p + p {
  194. margin-top: 2rem;
  195. }
  196. blockquote {
  197. background-color: #e3e1e1;
  198. border-left: .5vw solid #2d7474;
  199. display: flex;
  200. flex-direction: column;
  201. align-items: center;
  202. padding: 1rem;
  203. margin: 1.5rem;
  204. }
  205. blockquote cite {
  206. font-style: italic;
  207. }
  208. figure {
  209. border-top: .2vh solid #2d7474;
  210. background-color: #e3e1e1;
  211. text-align: center;
  212. padding: 1.5rem 0;
  213. margin: 1rem 0 0;
  214. font-size: 1.5rem;
  215. width: 100%;
  216. }
  217. figure img {
  218. width: 250px;
  219. height: 250px;
  220. border: .5vw solid #323a45;
  221. padding: 1px;
  222. }
  223. figcaption {
  224. padding: 1rem;
  225. line-height: 1.4;
  226. }
  227. aside {
  228. display: flex;
  229. flex-direction: column;
  230. background-color: #e3e1e1;
  231. padding: 1rem 0;
  232. border-bottom: .2vh solid #07486c;
  233. }
  234. aside p {
  235. max-width: 50rem;
  236. margin: 0 auto;
  237. }
  238. /* https://fvsch.com/code/css-locks/ */
  239. p, li, pre, code, kbd, samp, var, tt, time {
  240. font-size: .95rem;
  241. line-height: calc( 1.5em + 0.2 * 1rem );
  242. }
  243. h1 {
  244. font-size: 1.7rem;
  245. line-height: calc( 1.2em + 0.2 * 1rem );
  246. }
  247. h2 {
  248. font-size: 1.6rem;
  249. line-height: calc( 1.3em + 0.2 * 1rem );
  250. }
  251. h3 {
  252. font-size: 1.35rem;
  253. line-height: calc( 1.4em + 0.2 * 1rem );
  254. }
  255. @media (min-width: 20em) {
  256. /* The (100vw - 20rem) / (50 - 20) part
  257. resolves to 0-1rem, depending on the
  258. viewport width (between 20em and 50em). */
  259. p, li, pre, code, kbd, samp, var, tt, time {
  260. font-size: calc( .95rem + .6 * (100vw - 20rem) / (50 - 20) );
  261. line-height: calc( 1.5em + 0.2 * (100vw - 50rem) / (20 - 50) );
  262. }
  263. h1 {
  264. font-size: calc( 1.7rem + 1.5 * (100vw - 20rem) / (50 - 20) );
  265. line-height: calc( 1.2em + 0.2 * (100vw - 50rem) / (20 - 50) );
  266. }
  267. h2 {
  268. font-size: calc( 1.5rem + 1.5 * (100vw - 20rem) / (50 - 20) );
  269. line-height: calc( 1.3em + 0.2 * (100vw - 50rem) / (20 - 50) );
  270. }
  271. h3 {
  272. font-size: calc( 1.35rem + 1.5 * (100vw - 20rem) / (50 - 20) );
  273. line-height: calc( 1.4em + 0.2 * (100vw - 50rem) / (20 - 50) );
  274. }
  275. }
  276. @media (min-width: 50em) {
  277. /* The right part of the addition *must* be a
  278. rem value. In this example we *could* change
  279. the whole declaration to font-size:2.5rem,
  280. but if our baseline value was not expressed
  281. in rem we would have to use calc. */
  282. p, li, pre, code, kbd, samp, var, tt, time {
  283. font-size: calc( .95rem + .6 * 1rem );
  284. line-height: 1.5em;
  285. }
  286. h1 {
  287. font-size: calc( 1.7rem + 1.5 * 1rem );
  288. line-height: 1.2em;
  289. }
  290. h2 {
  291. font-size: calc( 1.5rem + 1.5 * 1rem );
  292. line-height: 1.3em;
  293. }
  294. h3 {
  295. font-size: calc( 1.35rem + 1.5 * 1rem );
  296. line-height: 1.4em;
  297. }
  298. figure img {
  299. width: 500px;
  300. height: 500px;
  301. }
  302. blockquote {
  303. margin-left: -1.5rem;
  304. }
  305. }
  306. figure.unsquared {
  307. margin-bottom: 1.5rem;
  308. }
  309. figure.unsquared img {
  310. height: inherit;
  311. }
  312. /* https://github.com/richleland/pygments-css */
  313. .codehilite{
  314. background-color: #fdf6e3;
  315. margin: 1rem auto;
  316. padding: 1rem;
  317. overflow-x:auto;
  318. box-shadow:inset 0 0 2px rgba(0,0,0,0.2)
  319. }
  320. .codehilite .t{color:#586e75}
  321. .codehilite .w{color:#073642}
  322. .codehilite .err{color:#cb4b16}
  323. .codehilite .k{color:#859900}
  324. .codehilite .kc{color:#2aa198}
  325. .codehilite .kd{color:#268bd2}
  326. .codehilite .kn{color:#b58900}
  327. .codehilite .kp{color:#859900}
  328. .codehilite .kr{color:#073642}
  329. .codehilite .kt{color:#b58900}
  330. .codehilite .n{color:#586e75}
  331. .codehilite .na{color:#2aa198}
  332. .codehilite .nb{color:#268bd2}
  333. .codehilite .nc{color:#268bd2}
  334. .codehilite .ne{color:#cb4b16}
  335. .codehilite .no{color:#2aa198}
  336. .codehilite .nd{color:#2aa198}
  337. .codehilite .ni{color:#2aa198;font-weight:bold}
  338. .codehilite .nf{color:#268bd2}
  339. .codehilite .nn{color:#586e75}
  340. .codehilite .nt{color:#2aa198;font-weight:bold}
  341. .codehilite .nv{color:#cb4b16}
  342. .codehilite .b{color:#859900}
  343. .codehilite .bp{color:#586e75}
  344. .codehilite .v{color:#586e75}
  345. .codehilite .vc{color:#586e75}
  346. .codehilite .vg{color:#268bd2}
  347. .codehilite .vi{color:#268bd2}
  348. .codehilite .m{color:#268bd2}
  349. .codehilite .mf{color:#268bd2}
  350. .codehilite .mh{color:#268bd2}
  351. .codehilite .mi{color:#268bd2}
  352. .codehilite .mo{color:#268bd2}
  353. .codehilite .s{color:#2aa198}
  354. .codehilite .sb{color:#2aa198}
  355. .codehilite .sc{color:#2aa198}
  356. .codehilite .sd{color:#2aa198}
  357. .codehilite .s2{color:#2aa198}
  358. .codehilite .se{color:#cb4b16}
  359. .codehilite .sh{color:#2aa198}
  360. .codehilite .si{color:#cb4b16}
  361. .codehilite .sx{color:#2aa198}
  362. .codehilite .sr{color:#cb4b16}
  363. .codehilite .s1{color:#2aa198}
  364. .codehilite .ss{color:#cb4b16}
  365. .codehilite .il{color:#268bd2}
  366. .codehilite .o{color:#586e75}
  367. .codehilite .ow{color:#859900}
  368. .codehilite .p{color:#586e75}
  369. .codehilite .c{color:#93a1a1;font-style:italic}
  370. .codehilite .cm{color:#93a1a1}
  371. .codehilite .cp{color:#93a1a1}
  372. .codehilite .c1{color:#93a1a1}
  373. .codehilite .cs{color:#93a1a1}
  374. .codehilite .hll{background-color:#dc322f}
  375. .codehilite .g{color:#586e75}
  376. .codehilite .gd{color:#586e75}
  377. .codehilite .ge{font-style:italic}
  378. .codehilite .gr{color:#586e75}
  379. .codehilite .gh{color:#586e75;font-weight:bold}
  380. .codehilite .gi{color:#586e75}
  381. .codehilite .go{color:#586e75}
  382. .codehilite .gp{color:#586e75}
  383. .codehilite .gs{font-weight:bold}
  384. .codehilite .gu{color:#586e75;font-weight:bold}
  385. .codehilite .gt{color:#586e75}
  386. @media print {
  387. body { font-size: 100%; }
  388. a:after { content: " (" attr(href) ")"; }
  389. a, a:link, a:visited, a:after {
  390. text-decoration: underline;
  391. text-shadow: none !important;
  392. background-image: none !important;
  393. background: white;
  394. color: black;
  395. }
  396. abbr[title] { border-bottom: 0; }
  397. abbr[title]:after { content: " (" attr(title) ")"; }
  398. img { page-break-inside: avoid; }
  399. @page { margin: 2cm .5cm; }
  400. h1, h2, h3 { page-break-after: avoid; }
  401. p3 { orphans: 3; widows: 3; }
  402. img {
  403. max-width: 250px !important;
  404. max-height: 250px !important;
  405. }
  406. nav, aside { display: none; }
  407. }
  408. /* Dark theme */
  409. [lang=en] body {
  410. background: #323a45;
  411. }
  412. [lang=en] article,
  413. [lang=en] article em,
  414. [lang=en] article strong {
  415. color: #f0f0ea;
  416. }
  417. [lang=en] article a {
  418. color: #ffbd2b;
  419. }
  420. [lang=en] article a:visited {
  421. color: #ff6b03;
  422. }
  423. [lang=en] blockquote,
  424. [lang=en] figure {
  425. background: #111930;
  426. color: #ccc;
  427. }
  428. </style>
  429. <nav>
  430. <p>
  431. <a href="/david/" title="Profil public">David&nbsp;Larlet</a> partage ses <a href="/david/blog/" title="Expériences bienveillantes">réflexions</a> et sa <a href="/david/stream/2019/" title="Pensées (dés)articulées">veille hebdomadaire</a>.
  432. </p>
  433. </nav>
  434. <h1>The Amish and cars</h1>
  435. <time>2018-06-18</time>
  436. <article>
  437. <blockquote>
  438. <p>The Amish use us as an experiment. They watch what happens when we adopt new technology, and then decide whether that’s something they want to adopt themselves. I asked one Amish person why they didn’t use automobiles. He simply smiled and turned to me and said, “Look what they did to your society.” And I asked what do you mean? “Well, do you know your neighbor? Do you know the names of your neighbors?” And, at the time, I had to admit to the fact that I didn’t.</p>
  439. <p>[…]</p>
  440. <p>At the beginning of the age of the automobile, nobody said, <em>All right: 30,000 people a year are going to die. Is that a decision we want to make?</em> What did happen is a very intense discussion about whether a car should be allowed on the road and who should be at fault when a car drives over a four-year-old in the street.</p>
  441. <p>In the 1930s, we ended up as a society deciding that four-year-olds should be the one to blame. We began to train people even before they began to speak about how to cross the street and how to avoid it in the street. We redesigned our world to be safe for automobiles and dangerous for children.</p>
  442. <p><cite><em><a href="https://qz.com/1275194/the-amish-understand-a-life-changing-truth-about-technology-the-rest-of-us-dont/">The Amish understand a life-changing truth about technology the rest of us don’t</a></em> (<a href="/david/cache/8a35346cb2dfd227c04913dffe2d97bf/">cache</a>)</cite></p>
  443. </blockquote>
  444. <p>Interesting article which resonates with my <a href="/david/stream/2018/06/08/">writings 10 days ago</a> and my current reevaluation of technologies. Communities or individuals depicted as <a href="/david/stream/2018/06/15/">weirdos</a> might be part of a future we try to hide to ourselves.</p>
  445. <p><em>A more resilient future?</em></p>
  446. </article>
  447. <nav>
  448. <p>
  449. <a rel=prev href="/david/stream/2018/06/17/">← Agile and ethics</a> | <a href="/david/stream/2018/" title="Retour à la liste complète">↑</a> | <a rel=next href="/david/stream/2018/06/19/">Journalists or entertainers →</a>
  450. </p>
  451. </nav>
  452. <aside>
  453. <p>
  454. Other articles in English:
  455. <a href="/david/blog/2018/caching-links/">On caching links</a>,
  456. <a href="/david/blog/2018/bushcraft-retrospective/">Bushcraft retrospective</a>,
  457. <a href="/david/blog/2018/into-the-raft/">Into the Raft</a>,
  458. <a href="/david/blog/2018/into-the-bugs/">Into the Bugs</a>,
  459. <a href="/david/blog/2018/meritocracy-crisis/">Meritocracy crisis</a>,
  460. <a href="/david/blog/2018/seller-teacher-wise/">The Seller, the Teacher and the Wise</a>,
  461. <a href="/david/blog/2018/into-the-good/">Into the Good</a>,
  462. <a href="/david/blog/2018/into-the-mice/">Into the Mice</a>,
  463. <a href="/david/blog/2018/into-the-camp/">Into the Camp</a>,
  464. <a href="/david/blog/2018/into-the-wind/">Into the Wind</a>,
  465. <a href="/david/blog/2018/into-the-snow/">Into the Snow</a>,
  466. <a href="/david/blog/2018/into-the-cold/">Into the Cold</a>,
  467. <a href="/david/blog/2017/async-python-frameworks/">Async Python Frameworks</a>,
  468. <a href="/david/blog/2017/distributed-teams/">Distributed teams</a>,
  469. <a href="/david/blog/2017/into-the-wild/">Into the Wild</a>,
  470. <a href="/david/blog/2017/without-javascript/">Without JavaScript</a>,
  471. <a href="/david/blog/2017/inclusive-python/">Inclusive Python</a>,
  472. <a href="/david/blog/2017/micro-cultures-governance/">Micro-cultures and governance</a>,
  473. <a href="/david/blog/2017/resilient-web-tools/">Resilient Web and Tools</a>,
  474. <a href="/david/blog/2017/bitcoin-energy/">Bitcoin and energy</a>,
  475. <a href="/david/blog/2016/team-building/">Team building</a>,
  476. <a href="/david/blog/2016/inclusive-developer/">Inclusive developer</a>,
  477. <a href="/david/blog/2016/cultural-intimacy/">Cultural Intimacy</a>,
  478. <a href="/david/blog/2016/tools-teams/">Tools and teams</a>,
  479. <a href="/david/blog/2016/senior-developer/">Senior developer</a>,
  480. <a href="/david/blog/2016/slow-data/">Slow Data</a>,
  481. <a href="/david/blog/2016/inclusive-communities/">Inclusive communities</a>,
  482. <a href="/david/blog/2016/delivery-values/">Delivery and value(s)</a>,
  483. <a href="/david/blog/2016/collaboration-debt/">Collaboration debt</a>,
  484. <a href="/david/blog/2016/communities-leadership/">Communities and leadership</a>,
  485. <a href="/david/blog/2016/specifications-apis/">Specifications and APIs</a>.
  486. Oh, and most of <a href="/david/stream/2018/">the 2018 thoughts</a>.
  487. </p>
  488. </aside>
  489. <nav>
  490. <p>
  491. <abbr title="Lieu de vie et de potentielles rencontres actuel">Montréal</abbr> ·
  492. <a href="mailto:david%40larlet.fr" title="Envoyer un courriel">Contact</a> ·
  493. <a href="http://larlet.com" title="Identité professionnelle">[Travailler ensemble ?]</a> ·
  494. <abbr title="Alwaysdata, 62 rue Tiquetonne 75002 Paris, +33.184162340">Hébergeur</abbr> ·
  495. <a href="/david/log/" title="S’abonner aux publications via RSS">Flux</a>
  496. </p>
  497. </nav>
  498. <script>
  499. /* Service workers */
  500. if (navigator.serviceWorker) {
  501. window.addEventListener('load', function () {
  502. var selector = 'a[href^="/david/cache/"], a[rel=prev], a[rel=next]'
  503. function sendLinks (selector) {
  504. var links = [].slice.call(document.querySelectorAll(selector)).map(function (link) {
  505. return link.getAttribute('href')
  506. })
  507. links.push(location.pathname) // Put the current page in cache too.
  508. navigator.serviceWorker.controller.postMessage({ links: links })
  509. }
  510. navigator.serviceWorker.getRegistration()
  511. .then(function (registration) {
  512. if (!registration || !navigator.serviceWorker.controller) {
  513. return navigator.serviceWorker.register('/serviceworker.js')
  514. .then(navigator.serviceWorker.ready)
  515. .then(function () {
  516. console.log('[ServiceWorker] Ready to go!')
  517. })
  518. .catch(console.error.bind(console))
  519. } else {
  520. console.log('[ServiceWorker] Send links via registration')
  521. sendLinks(selector)
  522. }
  523. })
  524. navigator.serviceWorker.addEventListener('controllerchange', function () {
  525. console.log('[ServiceWorker] Send links via controller change')
  526. sendLinks(selector)
  527. })
  528. navigator.serviceWorker.addEventListener('message', function (event) {
  529. var link = document.querySelector('a[href="' + event.data.link + '"]')
  530. if (event.data.status && link) {
  531. link.style.backgroundColor = '#2d7474'
  532. link.style.color = '#f0f0ea'
  533. link.setAttribute('title', 'Put in cache for offline use')
  534. }
  535. })
  536. })
  537. } else {
  538. console.warn('[ServiceWorker] No cache for old browsers.')
  539. }
  540. </script>