Repository with sources and generator of https://larlet.fr/david/ https://larlet.fr/david/
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

преди 5 години
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>Because of the numbers — 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/2018/07/10/">
  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>Because of the numbers</h1>
  435. <time>2018-07-10</time>
  436. <article>
  437. <blockquote>
  438. <p>As explained, the official reason why we are observed like Chinese citizens is patently absurd. We do not want better ads. Now they say, AI will make us click. Ads never worked and never will. No one clicks. We could install ad blockers, but that won’t help. But even without us clicking at all, somehow the ad system works. No one knows how, because it all happens in a black box. Only Facebook and Google know the real numbers. But no one questions how it works. Why? Because of the numbers.</p>
  439. <p>Google’s and Facebook’s revenues grow astronomically. Users and profits grow year over year. They are beyond comprehension, they are already bigger than reality, and they still grow. Meanwhile competitors—other social networks, search engines and newspapers—collapse. The once distributed architecture of the Internet is controlled by a handful of winners that take it all. And that is whom we believe. The winners. The losers are just jealous.</p>
  440. <p>There is no doubt that ads are bought. The more they observe us the more excited are the advertisers. The ads are bought. The ads are placed. The ads are distributed. And somehow the ads are clicked. But nobody knows anyone who clicks them. It is only strange if you think about it. Don’t think about it. The revenues grow, the profits grow, the intrusion is real and they are smarter than everybody else. They have data to back it up.</p>
  441. <p>No one cares if the business model really works.</p>
  442. <p><cite><em><a href="https://ia.net/topics/designed-in-china-assembled-in-california">Designed in China, Assembled in California</a></em> (<a href="/david/cache/939435322c95d2d7036908d4b4c21ddc/">cache</a>)</cite></p>
  443. </blockquote>
  444. <p>Probably the biggest lie of our industry.</p>
  445. <p><em><a href="https://en.wikipedia.org/wiki/Cargo_cult_programming">Cargo cult</a> advertising?</em></p>
  446. </article>
  447. <nav>
  448. <p>
  449. <a rel=prev href="/david/stream/2018/07/09/">← Fin du game</a> | <a href="/david/stream/2018/" title="Retour à la liste complète">↑</a> | <a rel=next href="/david/stream/2018/07/11/">Newbie issues →</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>