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diff --git a/files/fr/glossary/truthy/index.html b/files/fr/glossary/truthy/index.html new file mode 100644 index 0000000000..62ed641a6b --- /dev/null +++ b/files/fr/glossary/truthy/index.html @@ -0,0 +1,36 @@ +--- +title: Truthy +slug: Glossaire/Truthy +tags: + - Glossaire + - JavaScript + - Programmation +translation_of: Glossary/Truthy +--- +<p>En {{Glossary("JavaScript")}}, une valeur <code>truthy</code> est une valeur qui est considérée comme vraie quand elle est évaluée dans un contexte {{Glossary("Boolean","booléen")}} . Toutes les valeurs sont <code>truthy</code> sauf si elles sont definies comme {{Glossary("Falsy","falsy")}} (c'est-à-dire, sauf pour <code>false</code>, 0, "", <code>null</code>, <code>undefined</code>, et <code>NaN</code>).</p> + +<p><br> + {{Glossary("JavaScript")}} utilise la {{Glossary("Type_Conversion", "contrainte")}} de type dans un contexte booléen.</p> + +<p><br> + Exemples de valeurs truthy en JavaScript (qui seront considérées comme vraies, ce qui exécutera le bloc if):</p> + +<pre class="brush: js line-numbers language-js"><code class="language-js"><span class="keyword token">if</span> <span class="punctuation token">(</span><span class="keyword token">true</span><span class="punctuation token">)</span> +<span class="keyword token">if</span> <span class="punctuation 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><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><span class="number token">42</span><span class="punctuation token">)</span> +<span class="keyword token">if</span> <span class="punctuation token">(</span><span class="string token">"foo"</span><span class="punctuation token">)</span> +<span class="keyword token">if</span> <span class="punctuation token">(</span><span class="keyword token">new</span> <span class="class-name token">Date</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><span class="operator token">-</span><span class="number token">42</span><span class="punctuation token">)</span> +<span class="keyword token">if</span> <span class="punctuation token">(</span><span class="number token">3.14</span><span class="punctuation token">)</span> +<span class="keyword token">if</span> <span class="punctuation token">(</span><span class="operator token">-</span><span class="number token">3.14</span><span class="punctuation token">)</span> +<span class="keyword token">if</span> <span class="punctuation token">(</span><span class="number token">Infinity</span><span class="punctuation token">)</span> +<span class="keyword token">if</span> <span class="punctuation token">(</span><span class="operator token">-</span><span class="number token">Infinity</span><span class="punctuation token">)</span></code></pre> + +<h2 id="Voir_aussi">Voir aussi </h2> + +<ul> + <li>{{Glossary("Falsy")}}</li> + <li>{{Glossary("Type_Conversion", "Contrainte")}}</li> + <li>{{Glossary("Boolean","Booléen")}}</li> +</ul> |