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<h1 class="single">
  <span><a id="jumper" href="#jumpto" title="Un peu perdu ?">?</a></span>
  Formation JS Avancé
  <time>Publié le 18 juin 2015</time>
</h1>
<article class="single">
  <blockquote>
<p>Do you need to be an ES6/ES2015 expert? Probably not today, but you should know at least as much about it as your peers, and possibly more. It’s also worth at least entertaining the possibility of writing your next greenfield project using ES6; the future will be here before you know it.</p>
<p>New language features aside, you should be able to speak fluently about the asynchronicity of JavaScript, and using callbacks and promises to manage it. You should have well-formed opinions about strategies for loading applications in the browser and communicating between pieces of an application. You should maybe have a favorite application development framework, but not at the expense of having a general understanding of how other frameworks operate, and the tradeoffs you accept when you choose one.</p>
<p><cite><em><a href="http://rmurphey.com/blog/2015/03/23/a-baseline-for-front-end-developers-2015/">A Baseline for Front-End [JS] Developers: 2015</a></em> (<a href="/david/cache/c31b932c706d474b02d638c05d98bfca/">cache</a>)</cite></p>
</blockquote>
<p>J’ai eu l’occasion d’accompagner Vincent pour une formation sur JavaScript et ses concepts avancés. Il a été question de <strong>technique</strong> bien sûr avec ES6/Next/2015, les <em>IIFE</em>, les promesses, le scope, les objets, les <em>Web Workers</em>, les <em>Web Components</em>, <em>localStorage</em>, etc. Mais aussi de <strong>culture</strong>  avec les différents outils, <em>frameworks</em>, approches, <em>workflows</em>, etc.</p>
<p>Le plus important sur ces 2 jours a certainement été d’avoir autant de façons de faire que de participants (une dizaine) et de pouvoir confronter les stratégies et les expériences. On a essayé au maximum de mettre les mains dans le code et d’itérer en comparant ensuite les concepts mis en pratique. C’était vraiment très enrichissant, autant pour les stagiaires que pour <a href="http://scopyleft.fr/">nous</a> :-).</p>
<p><strong>Plus je pratique JavaScript et plus je m’aperçois qu’il s’agit d’un langage flexible</strong> que l’on peut adapter à sa façon de développer et de partager du code. C’est intéressant car cela invite à la discussion dans l’équipe : utilise-t-on des points-virgules ? comment définit-on un objet et une <em>IIFE</em> ? apprécie-t-on l’approche objet ou l’approche fonctionnelle ? veut-on utiliser des <em>polyfills</em> et produire des modules isomorphiques ? L’établissement de <a href="/david/blog/2015/collaboration-technique/">conventions</a> <a href="https://github.com/elierotenberg/coding-styles/blob/master/es6.md">collectives</a> et <a href="https://github.com/feross/standard/">évolutives</a> <a href="https://github.com/bendc/frontend-guidelines">devient</a> alors <a href="https://github.com/rwaldron/idiomatic.js">obligatoire</a> (ou comment transformer une limitation en avantage).</p>
<p>Quelques liens pour la route :</p>
<ul>
<li><a href="https://www.airpair.com/javascript/posts/the-mind-boggling-universe-of-javascript-modules">The mind-boggling universe of JavaScript Module strategies</a> (<a href="/david/cache/85169542c2bb95c8424a3081ec0b90b1/">cache</a>)</li>
<li><a href="https://medium.com/javascript-scene/common-misconceptions-about-inheritance-in-javascript-d5d9bab29b0a">Common Misconceptions About Inheritance in JavaScript</a> (<a href="/david/cache/96f3df2f689eb35d5e5e551ab63088f8/">cache</a>)</li>
<li><a href="http://www.2ality.com/2015/03/es6-generators.html">ES6 generators in depth</a> (<a href="/david/cache/e826765f4c8c47da6b78aa2ad1343cc6/">cache</a>)</li>
<li><a href="http://elijahmanor.com/talks/js-smells/">Eliminate JavaScript Code Smells</a></li>
<li><a href="http://raganwald.com/2015/02/21/interviewing-for-a-front-end-job.html">Interviewing for a JavaScript Job</a> (<a href="/david/cache/8b2231129eb55375d546f931b81c06f1/">cache</a>)</li>
<li><a href="http://jaysoo.ca/2014/03/20/i18n-with-es6-template-strings/">i18n with tagged template strings in ECMAScript 6</a> (<a href="/david/cache/68f2d862066c644a50f929e8a787406b/">cache</a>)</li>
<li><a href="http://raganwald.com/2015/06/17/functional-mixins.html">Functional Mixins in ECMAScript 2015</a> (<a href="/david/cache/0970affe827a4197de22a7ccbe4fb897/">cache</a>)</li>
</ul>
<p>…et pour finir un bout de code qui me sert davantage de jalon dans ma pratique personnelle de JavaScript (dont j’espère rigoler dans 3 mois) :</p>
<div class="codehilite"><pre><span class="cp">&lt;!doctype html&gt;</span>
<span class="nt">&lt;html</span> <span class="na">lang=</span><span class="s">en</span><span class="nt">&gt;</span>
  <span class="nt">&lt;meta</span> <span class="na">charset=</span><span class="s">utf-8</span><span class="nt">&gt;</span>
  <span class="nt">&lt;title&gt;</span>Current JS<span class="nt">&lt;/title&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">href=</span><span class="s">http://example.org</span><span class="nt">&gt;</span>Link to example<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">href=</span><span class="s">http://httpbin.org</span><span class="nt">&gt;</span>Link to HTTPbin<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;script&gt;</span>
    <span class="s1">&#39;use strict&#39;</span>
    <span class="nb">window</span><span class="p">.</span><span class="nx">$</span> <span class="o">=</span> <span class="nb">document</span><span class="p">.</span><span class="nx">querySelectorAll</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nb">document</span><span class="p">)</span>

    <span class="k">void</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">elements</span><span class="p">)</span> <span class="p">{</span>
      <span class="p">;[].</span><span class="nx">forEach</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">elements</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">link</span><span class="p">)</span> <span class="p">{</span>
        <span class="nx">link</span><span class="p">.</span><span class="nx">addEventListener</span><span class="p">(</span><span class="s1">&#39;click&#39;</span><span class="p">,</span> <span class="p">(</span><span class="nx">event</span><span class="p">)</span> <span class="o">=&gt;</span> <span class="p">{</span>
          <span class="nx">event</span><span class="p">.</span><span class="nx">preventDefault</span><span class="p">()</span>
          <span class="nx">console</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="err">`</span><span class="nx">$</span><span class="p">{</span><span class="nx">link</span><span class="p">.</span><span class="nx">text</span><span class="p">}</span> <span class="nx">clicked</span><span class="o">!</span><span class="err">`</span><span class="p">)</span>
        <span class="p">})</span>
      <span class="p">})</span>
    <span class="p">}(</span><span class="nx">$</span><span class="p">(</span><span class="s1">&#39;a&#39;</span><span class="p">))</span>
  <span class="nt">&lt;/script&gt;</span>
<span class="nt">&lt;/html&gt;</span>
</pre></div>
</article>


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      Bonjour/Hi!
      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>
      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>).
    </p>
    <p>
      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>.
    </p>

      <p>
        Les dernières publications hebdomadaires sont :
      </p>
      <ul class="with_columns">

          <li>
            <a href="/david/stream/2019/12/31/">Merci</a>
          </li>

          <li>
            <a href="/david/stream/2019/12/27/">Intemporels</a>
          </li>

          <li>
            <a href="/david/stream/2019/12/24/">Outils</a>
          </li>

          <li>
            <a href="/david/stream/2019/12/17/">Origines</a>
          </li>

          <li>
            <a href="/david/stream/2019/12/10/">Publier</a>
          </li>

          <li>
            <a href="/david/stream/2019/12/03/">En forêt</a>
          </li>

          <li>
            <a href="/david/stream/2019/11/26/">Ecocentric</a>
          </li>

          <li>
            <a href="/david/stream/2019/11/19/">Se livrer</a>
          </li>

          <li>
            <a href="/david/stream/2019/11/12/">Dépendances</a>
          </li>

          <li>
            <a href="/david/stream/2019/11/05/">Positif</a>
          </li>

          <li>
            <a href="/david/stream/2019/10/29/">Dettes</a>
          </li>

          <li>
            <a href="/david/stream/2019/10/22/">Privilèges</a>
          </li>

          <li>
            <a href="/david/stream/2019/10/15/">Discrétion</a>
          </li>

          <li>
            <a href="/david/stream/2019/10/08/">Désespérance</a>
          </li>

          <li>
            <a href="/david/stream/2019/10/01/">Présent</a>
          </li>

          <li>
            <a href="/david/stream/2019/09/24/">Manifester</a>
          </li>

          <li>
            <a href="/david/stream/2019/09/17/">Arpenter</a>
          </li>

          <li>
            <a href="/david/stream/2019/09/10/">Nostalgie</a>
          </li>

          <li>
            <a href="/david/stream/2019/09/03/">Déconstruire</a>
          </li>

          <li>
            <a href="/david/stream/2019/08/27/">Documenter</a>
          </li>

          <li>
            <a href="/david/stream/2019/08/20/">Frustration</a>
          </li>

          <li>
            <a href="/david/stream/2019/08/13/">Holisme</a>
          </li>

          <li>
            <a href="/david/stream/2019/08/06/">1%</a>
          </li>

          <li>
            <a href="/david/stream/2019/07/30/">Exemplarité</a>
          </li>

          <li>
            <a href="/david/stream/2019/07/23/">Timelines</a>
          </li>

          <li>
            <a href="/david/stream/2019/07/16/">Écoute</a>
          </li>

          <li>
            <a href="/david/stream/2019/07/02/">Anxiété</a>
          </li>

          <li>
            <a href="/david/stream/2019/06/21/">À lier</a>
          </li>

          <li>
            <a href="/david/stream/2019/06/14/">Pauvreté</a>
          </li>

          <li>
            <a href="/david/stream/2019/06/07/">Amateur</a>
          </li>

          <li>
            <a href="/david/stream/2019/05/31/">Pollution</a>
          </li>

          <li>
            <a href="/david/stream/2019/05/24/">Apaisement</a>
          </li>

          <li>
            <a href="/david/stream/2019/05/10/">Folie</a>
          </li>

          <li>
            <a href="/david/stream/2019/05/03/">Sympathie</a>
          </li>

          <li>
            <a href="/david/stream/2019/04/12/">Péremption</a>
          </li>

          <li>
            <a href="/david/stream/2019/04/05/">Définitions</a>
          </li>

          <li>
            <a href="/david/stream/2019/03/29/">Acceptation</a>
          </li>

          <li>
            <a href="/david/stream/2019/03/22/">Dissonance</a>
          </li>

          <li>
            <a href="/david/stream/2019/03/15/">Reconnaissance</a>
          </li>

          <li>
            <a href="/david/stream/2019/03/08/">Lecture</a>
          </li>

          <li>
            <a href="/david/stream/2019/03/01/">Journaux</a>
          </li>

          <li>
            <a href="/david/stream/2019/02/22/">Écriture</a>
          </li>

          <li>
            <a href="/david/stream/2019/02/15/">Kyriarchie</a>
          </li>

          <li>
            <a href="/david/stream/2019/02/08/">Mots-serrures</a>
          </li>

          <li>
            <a href="/david/stream/2019/02/01/">Sans voie</a>
          </li>

          <li>
            <a href="/david/stream/2019/01/25/">Auto-diagnostic</a>
          </li>

          <li>
            <a href="/david/stream/2019/01/18/">Agilité</a>
          </li>

          <li>
            <a href="/david/stream/2019/01/11/">Métaphores</a>
          </li>

          <li>
            <a href="/david/stream/2019/01/04/">Balbutiements</a>
          </li>

      </ul>

    <p>
      Voici quelques articles choisis :
      <a href="/david/blog/2019/faire-equipe/" title="Accéder à l’article complet">Faire équipe</a>,
      <a href="/david/blog/2018/bivouac-automnal/" title="Accéder à l’article complet">Bivouac automnal</a>,
      <a href="/david/blog/2018/commodite-effondrement/" title="Accéder à l’article complet">Commodité et effondrement</a>,
      <a href="/david/blog/2017/donnees-communs/" title="Accéder à l’article complet">Des données aux communs</a>,
      <a href="/david/blog/2016/accompagner-enfant/" title="Accéder à l’article complet">Accompagner un enfant</a>,
      <a href="/david/blog/2016/senior-developer/" title="Accéder à l’article complet">Senior developer</a>,
      <a href="/david/blog/2016/illusion-sociale/" title="Accéder à l’article complet">L’illusion sociale</a>,
      <a href="/david/blog/2016/instantane-scopyleft/" title="Accéder à l’article complet">Instantané Scopyleft</a>,
      <a href="/david/blog/2016/enseigner-web/" title="Accéder à l’article complet">Enseigner le Web</a>,
      <a href="/david/blog/2016/simplicite-defaut/" title="Accéder à l’article complet">Simplicité par défaut</a>,
      <a href="/david/blog/2016/minimalisme-esthetique/" title="Accéder à l’article complet">Minimalisme et esthétique</a>,
      <a href="/david/blog/2014/un-web-omni-present/" title="Accéder à l’article complet">Un web omni-présent</a>,
      <a href="/david/blog/2014/manifeste-developpeur/" title="Accéder à l’article complet">Manifeste de développeur</a>,
      <a href="/david/blog/2013/confort-convivialite/" title="Accéder à l’article complet">Confort et convivialité</a>,
      <a href="/david/blog/2013/testament-numerique/" title="Accéder à l’article complet">Testament numérique</a>,
      et <a href="/david/blog/" title="Accéder aux archives">bien d’autres…</a>
    </p>
    <p>
      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>.
    </p>
    <p>
      Je ne traque pas ta navigation mais mon
      <abbr title="Alwaysdata, 62 rue Tiquetonne 75002 Paris, +33.184162340">hébergeur</abbr>
      conserve des logs d’accès.
    </p>
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