Prepare Web API section for Markdown conversion (#2464)

* Remove summary classes and ids

* Remove unecessary hidden

* Remove useless span filled with useless attributes / ids

* Remove useless font

* Remove notranslate

* Remove id in other elements than headings

* Remove name attributes

* Remove <pre><code> for JS w/ language-js class

* Remove <pre><code> for HTML w/ language-html class

* Remove <pre><code> for other lang w/ language-* class

* Rm highlighted line in code samples

* fix links, internal, external, absolute URLs

* missing file from last commit

* Fix styles errors apart from table + some classes

* Fix notes and warnings (+ some other :x)

* fix typo during merge which broke a doc

* aand forgot a conflict

* fix remaining classes of errors except dls and images

* Fix dls

* Fix images (deki/mozillademos) and remaining style issues

* Remove script tag from svg file

* Remove script tag from svg fileS

* Compress SVG files for CI

1 files changed, 21 insertions, 23 deletions

diff --git a/files/fr/web/api/element/childelementcount/index.html b/files/fr/web/api/element/childelementcount/index.html
index 02b2f82a5b..a23de9fbaa 100644
--- a/files/fr/web/api/element/childelementcount/index.html
+++ b/files/fr/web/api/element/childelementcount/index.html
@@ -18,7 +18,7 @@ original_slug: Web/API/ParentNode/childElementCount
 <p>La propriété <code><strong>ParentNode.childElementCount</strong></code> en lecture seule renvoie un <code>unsigned long</code> (<em>long non signé</em>) représentant le nombre d'élèments fils de l'élément donné.</p>
 
 <div class="note">
-<p>Cette propriété a été définie dans la pure interface {{domxref("ElementTraversal")}}.<br>
+<p><strong>Note :</strong> Cette propriété a été définie dans la pure interface {{domxref("ElementTraversal")}}.<br>
  Comme cette interface contenait deux différents jeux de propriétés, l'un visant les  {{domxref("Node")}} (<em>noeuds</em>) qui ont des enfants, l'autre les enfants, ils ont été déplacés dans deux interfaces pures, {{domxref("ParentNode")}} et {{domxref("ChildNode")}}. Dans ce cas, <code>childElementCount</code> a été rattaché à {{domxref("ParentNode")}}. C'est un changement assez technique qui ne devrait pas affecter la compatibilité.</p>
 </div>
 
@@ -36,30 +36,30 @@ original_slug: Web/API/ParentNode/childElementCount
 
 <h2 id="Exemple">Exemple</h2>
 
-<pre class="brush:js line-numbers  language-js"><code class="language-js"><span class="keyword token">var</span> foo <span class="operator token">=</span> document<span class="punctuation token">.</span><span class="function token">getElementById</span><span class="punctuation token">(</span><span class="string token">"foo"</span><span class="punctuation token">)</span><span class="punctuation token">;</span>
-<span class="keyword token">if</span> <span class="punctuation token">(</span>foo<span class="punctuation token">.</span>childElementCount <span class="operator token">&gt;</span> <span class="number token">0</span><span class="punctuation token">)</span> <span class="punctuation token">{</span>
-    <span class="comment token">// faire quelque chose</span>
-<span class="punctuation token">}</span></code></pre>
+<pre class="brush:js">var foo = document.getElementById("foo");
+if (foo.childElementCount &gt; 0) {
+    // faire quelque chose
+}</pre>
 
 <h2 id="Polyfill_pour_IE8_IE9_Safari">Polyfill pour IE8 &amp; IE9 &amp; Safari</h2>
 
 <p>Cette propriété n'est pas supportée par les versions antérieures à IE9 ni par IE9 ni par Safari. Ainsi, les objets Document, DocumentFragment dans ces navigateurs ne l'ont pas.</p>
 
-<pre class="brush:js line-numbers  language-js"><code class="language-js"><span class="punctuation token">;</span><span class="punctuation token">(</span><span class="keyword token">function</span><span class="punctuation token">(</span>constructor<span class="punctuation token">)</span> <span class="punctuation token">{</span>
-    <span class="keyword token">if</span> <span class="punctuation token">(</span>constructor <span class="operator token">&amp;&amp;</span>
-        constructor<span class="punctuation token">.</span>prototype <span class="operator token">&amp;&amp;</span>
-        constructor<span class="punctuation token">.</span>prototype<span class="punctuation token">.</span>childElementCount <span class="operator token">==</span> <span class="keyword token">null</span><span class="punctuation token">)</span> <span class="punctuation token">{</span>
-        Object<span class="punctuation token">.</span><span class="function token">defineProperty</span><span class="punctuation token">(</span>constructor<span class="punctuation token">.</span>prototype<span class="punctuation token">,</span> <span class="string token">'childElementCount'</span><span class="punctuation token">,</span> <span class="punctuation token">{</span>
-            <span class="keyword token">get</span><span class="punctuation token">:</span> <span class="keyword token">function</span><span class="punctuation token">(</span><span class="punctuation token">)</span> <span class="punctuation token">{</span>
-                <span class="keyword token">var</span> i <span class="operator token">=</span> <span class="number token">0</span><span class="punctuation token">,</span> count <span class="operator token">=</span> <span class="number token">0</span><span class="punctuation token">,</span> node<span class="punctuation token">,</span> nodes <span class="operator token">=</span> <span class="keyword token">this</span><span class="punctuation token">.</span>childNodes<span class="punctuation token">;</span>
-                <span class="keyword token">while</span> <span class="punctuation token">(</span>node <span class="operator token">=</span> nodes<span class="punctuation token">[</span>i<span class="operator token">++</span><span class="punctuation token">]</span><span class="punctuation token">)</span> <span class="punctuation token">{</span>
-                    <span class="keyword token">if</span> <span class="punctuation token">(</span>node<span class="punctuation token">.</span>nodeType <span class="operator token">===</span> <span class="number token">1</span><span class="punctuation token">)</span> count<span class="operator token">++</span><span class="punctuation token">;</span>
-                <span class="punctuation token">}</span>
-                <span class="keyword token">return</span> count<span class="punctuation token">;</span>
-            <span class="punctuation token">}</span>
-        <span class="punctuation token">}</span><span class="punctuation token">)</span><span class="punctuation token">;</span>
-    <span class="punctuation token">}</span>
-<span class="punctuation token">}</span><span class="punctuation token">)</span><span class="punctuation token">(</span>window<span class="punctuation token">.</span>Node <span class="operator token">||</span> window<span class="punctuation token">.</span>Element<span class="punctuation token">)</span><span class="punctuation token">;</span></code></pre>
+<pre class="brush:js">;(function(constructor) {
+    if (constructor &amp;&amp;
+        constructor.prototype &amp;&amp;
+        constructor.prototype.childElementCount == null) {
+        Object.defineProperty(constructor.prototype, 'childElementCount', {
+            get: function() {
+                var i = 0, count = 0, node, nodes = this.childNodes;
+                while (node = nodes[i++]) {
+                    if (node.nodeType === 1) count++;
+                }
+                return count;
+            }
+        });
+    }
+})(window.Node || window.Element);</pre>
 
 <h2 id="Spécification">Spécification</h2>
 
@@ -93,7 +93,5 @@ original_slug: Web/API/ParentNode/childElementCount
 
 <ul>
  <li>Les interfaces pures {{domxref("ParentNode")}} et {{domxref("ChildNode")}}.</li>
- <li>
-  <div class="syntaxbox">Types d'objets implémentant cette interface pure : {{domxref("Document")}}, {{domxref("Element")}} et {{domxref("DocumentFragment")}}.</div>
- </li>
+ <li>Types d'objets implémentant cette interface pure : {{domxref("Document")}}, {{domxref("Element")}} et {{domxref("DocumentFragment")}}.</li>
 </ul>