https://blog.qife122.com/tags/%E7%9C%9F%E5%80%BC%E5%88%A4%E6%96%AD/ Recent content in 真值判断 on 办公AI智能小助手 Hugo zh-cn qife Thu, 04 Sep 2025 02:52:36 +0800 https://blog.qife122.com/p/javascript%E4%B8%AD%E7%9A%84%E7%9C%9F%E5%80%BC%E5%88%A4%E6%96%AD%E9%9D%9E%E7%A9%BA%E5%AD%97%E7%AC%A6%E4%B8%B2%E7%9A%84%E7%9C%9F%E7%9B%B8/ Thu, 04 Sep 2025 02:52:36 +0800 https://blog.qife122.com/p/javascript%E4%B8%AD%E7%9A%84%E7%9C%9F%E5%80%BC%E5%88%A4%E6%96%AD%E9%9D%9E%E7%A9%BA%E5%AD%97%E7%AC%A6%E4%B8%B2%E7%9A%84%E7%9C%9F%E7%9B%B8/ <div class="highlight"><div class="chroma"> <table class="lntable"><tr><td class="lntd"> <pre tabindex="0" class="chroma"><code><span class="lnt">1 </span><span class="lnt">2 </span></code></pre></td> <td class="lntd"> <pre tabindex="0" class="chroma"><code class="language-javascript" data-lang="javascript"><span class="line"><span class="cl"><span class="o">&gt;</span> <span class="k">if</span> <span class="p">(</span><span class="s2">&#34;0&#34;</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="s2">&#34;true&#34;</span><span class="p">);</span> </span></span><span class="line"><span class="cl"><span class="kc">true</span> </span></span></code></pre></td></tr></table> </div> </div><p><strong>Excuse me?</strong></p> <blockquote> <p>在一个逻辑的世界里，非空字符串为真值是合理的，即使该值是&quot;false&quot;。JavaScript并不逻辑。</p> </blockquote> <p>你一定讨厌我们建立在C语言上的非逻辑世界，因为它有相同的行为。</p>