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  12. <title>Everyone has JavaScript, right? (archive) — David Larlet</title>
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  436. </style>
  437. <h1>
  438. <span><a id="jumper" href="#jumpto" title="Un peu perdu ?">?</a></span>
  439. Everyone has JavaScript, right? (archive)
  440. <time>Pour la pérennité des contenus liés. Non-indexé, retrait sur simple email.</time>
  441. </h1>
  442. <section>
  443. <article>
  444. <h3><a href="http://kryogenix.org/code/browser/everyonehasjs.html">Source originale du contenu</a></h3>
  445. <dl>
  446. <dt>Your user requests your web app</dt>
  447. <dt>Has the page loaded yet?</dt>
  448. <dd>“All your users are non-JS while they're downloading your JS” — <a href="https://t.co/uTM3255RuW">Jake Archibald</a></dd>
  449. <dt>Did the HTTP request for the JavaScript succeed?</dt>
  450. <dd>If they're on a train and their net connection goes away before your JavaScript loads, then there's no JavaScript.</dd>
  451. <dt>Did the HTTP request for the JavaScript complete?</dt>
  452. <dd>How many times have you had a mobile browser hang forever loading a page and then load it instantly when you refresh?</dd>
  453. <dt>Does the corporate firewall block JavaScript?</dt>
  454. <dd>Because loads of them still do.</dd>
  455. <dt>Does their ISP or mobile operator interfere with downloaded JavaScript?</dt>
  456. <dd><a href="http://www.theguardian.com/technology/2014/jan/28/sky-broadband-blocks-jquery-web-critical-plugin">Sky accidentally block jQuery</a>, <a href="http://aaron-gustafson.com/notebook/2014/the-network-effect/">Comcast insert ads into your script</a>, and if you've never experienced this before, drive to an airport and use their wifi.</dd>
  457. <dt>Have they switched off JavaScript?</dt>
  458. <dd>People <a href="https://gds.blog.gov.uk/2013/10/21/how-many-people-are-missing-out-on-javascript-enhancement/">still do</a>.</dd>
  459. <dt>Do they have addons or plugins installed which inject script or alter the DOM in ways you didn't anticipate?</dt>
  460. <dd>There are thousands of browser extensions. Are you sure none interfere with your JS?</dd>
  461. <dt>Is the CDN up?</dt>
  462. <dd>CDNs are good at staying up (that’s what being a CDN <em>is</em>) but <a href="http://www.cdnperf.com/">a minute downtime a month</a> will still hit users who browse in that minute.</dd>
  463. <dt>Does their browser support the JavaScript you’ve written?</dt>
  464. <dd>Check <a href="http://caniuse.com/">Can I Use</a> for browser usage figures.</dd>
  465. <dt><p>Is all the above true?</p><p>Then yes, your JavaScript works.</p><p><strong>Probably.</strong></p></dt>
  466. <dd><p><a href="http://jakearchibald.com/2013/progressive-enhancement-still-important/">Progressive enhancement</a>. Because sometimes your JavaScript just won’t work.</p>
  467. <p>Be prepared.</p></dd>
  468. </dl>
  469. </article>
  470. </section>
  471. <nav id="jumpto">
  472. <p>
  473. <a href="/david/blog/">Accueil du blog</a> |
  474. <a href="http://kryogenix.org/code/browser/everyonehasjs.html">Source originale</a> |
  475. <a href="/david/stream/2019/">Accueil du flux</a>
  476. </p>
  477. </nav>
  478. <footer>
  479. <div>
  480. <img src="/static/david/david-larlet-avatar.jpg" loading="lazy" class="avatar" width="200" height="200">
  481. <p>
  482. Bonjour/Hi!
  483. Je suis <a href="/david/" title="Profil public">David&nbsp;Larlet</a>, je vis actuellement à Montréal et j’alimente cet espace depuis 15 ans. <br>
  484. Si tu as apprécié cette lecture, n’hésite pas à poursuivre ton exploration. Par exemple via les <a href="/david/blog/" title="Expériences bienveillantes">réflexions bimestrielles</a>, la <a href="/david/stream/2019/" title="Pensées (dés)articulées">veille hebdomadaire</a> ou en t’abonnant au <a href="/david/log/" title="S’abonner aux publications via RSS">flux RSS</a> (<a href="/david/blog/2019/flux-rss/" title="Tiens c’est quoi un flux RSS ?">so 2005</a>).
  485. </p>
  486. <p>
  487. Je m’intéresse à la place que je peux avoir dans ce monde. En tant qu’humain, en tant que membre d’une famille et en tant qu’associé d’une coopérative. De temps en temps, je fais aussi des <a href="https://github.com/davidbgk" title="Principalement sur Github mais aussi ailleurs">trucs techniques</a>. Et encore plus rarement, <a href="/david/talks/" title="En ce moment je laisse plutôt la place aux autres">j’en parle</a>.
  488. </p>
  489. <p>
  490. Voici quelques articles choisis :
  491. <a href="/david/blog/2019/faire-equipe/" title="Accéder à l’article complet">Faire équipe</a>,
  492. <a href="/david/blog/2018/bivouac-automnal/" title="Accéder à l’article complet">Bivouac automnal</a>,
  493. <a href="/david/blog/2018/commodite-effondrement/" title="Accéder à l’article complet">Commodité et effondrement</a>,
  494. <a href="/david/blog/2017/donnees-communs/" title="Accéder à l’article complet">Des données aux communs</a>,
  495. <a href="/david/blog/2016/accompagner-enfant/" title="Accéder à l’article complet">Accompagner un enfant</a>,
  496. <a href="/david/blog/2016/senior-developer/" title="Accéder à l’article complet">Senior developer</a>,
  497. <a href="/david/blog/2016/illusion-sociale/" title="Accéder à l’article complet">L’illusion sociale</a>,
  498. <a href="/david/blog/2016/instantane-scopyleft/" title="Accéder à l’article complet">Instantané Scopyleft</a>,
  499. <a href="/david/blog/2016/enseigner-web/" title="Accéder à l’article complet">Enseigner le Web</a>,
  500. <a href="/david/blog/2016/simplicite-defaut/" title="Accéder à l’article complet">Simplicité par défaut</a>,
  501. <a href="/david/blog/2016/minimalisme-esthetique/" title="Accéder à l’article complet">Minimalisme et esthétique</a>,
  502. <a href="/david/blog/2014/un-web-omni-present/" title="Accéder à l’article complet">Un web omni-présent</a>,
  503. <a href="/david/blog/2014/manifeste-developpeur/" title="Accéder à l’article complet">Manifeste de développeur</a>,
  504. <a href="/david/blog/2013/confort-convivialite/" title="Accéder à l’article complet">Confort et convivialité</a>,
  505. <a href="/david/blog/2013/testament-numerique/" title="Accéder à l’article complet">Testament numérique</a>,
  506. et <a href="/david/blog/" title="Accéder aux archives">bien d’autres…</a>
  507. </p>
  508. <p>
  509. On peut <a href="mailto:david%40larlet.fr" title="Envoyer un courriel">échanger par courriel</a>. Si éventuellement tu souhaites que l’on travaille ensemble, tu devrais commencer par consulter le <a href="http://larlet.com">profil dédié à mon activité professionnelle</a> et/ou contacter directement <a href="http://scopyleft.fr/">scopyleft</a>, la <abbr title="Société coopérative et participative">SCOP</abbr> dont je fais partie depuis six ans. Je recommande au préalable de lire <a href="/david/blog/2018/cout-site/" title="Attention ce qui va suivre peut vous choquer">combien coûte un site</a> et pourquoi je suis plutôt favorable à une <a href="/david/pro/devis/" title="Discutons-en !">non-demande de devis</a>.
  510. </p>
  511. <p>
  512. Je ne traque pas ta navigation mais mon
  513. <abbr title="Alwaysdata, 62 rue Tiquetonne 75002 Paris, +33.184162340">hébergeur</abbr>
  514. conserve des logs d’accès.
  515. </p>
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