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HTML 文本域标签 () 是创建多行文本输入字段的强大工具，在设计网站表单时至关重要。它允许用户输入大量文本，使其成为收集评论、意见和详细描述的理想选择。</p> <p><strong>文本域的基础</strong></p> <p>文本域是一个矩形框，可让用户输入文本。它使用属性 <code>rows</code> 和 <code>cols</code> 来指定输入框的高度和宽度。例如，以下代码创建一个文本域，其高度为 5 行，宽度为 30 个字符：</p> <pre><code class="language-php"><code class="language-html"><textarea rows="5" cols="30"></textarea></code></code></pre> <p><strong>高级选项</strong></p> <p>除了基本属性外，文本域还提供了许多其他选项，包括：</p> <ul> <li><strong>name：</strong>指定文本域的名称，用于表单处理。</li> <li><strong>placeholder：</strong>提供文本域的提示文本，在未输入文本时显示。</li> <li><strong>required：</strong>表明文本域是必填字段。</li> <li><strong>disabled：</strong>禁用文本域，使其不可编辑。</li> <li><strong>wrap：</strong>控制文本域中文本的换行方式。</li> </ul> <p><strong>用法示例</strong></p> <p>以下代码创建一个带标签和占位符的文本域，收集用户的评论：</p> <pre><code class="language-php"><code class="language-html"><label for="comment">留言：</label> <textarea id="comment" rows="5" cols="60" placeholder="请在这里留下您的评论或建议"></textarea></code></code></pre> <p><strong>输入验证</strong></p> <p>文本域可以通过 HTML5 验证进行验证。这有助于确保用户输入有效数据，例如：</p> <pre><code class="language-php"><code class="language-html"><textarea id="email" required pattern="[a-z0-9._%+-]+@[a-z0-9.-]+.[a-z]{2,3}$"></textarea></code></code></pre> <p><strong>CSS 样式</strong></p> <p>文本域可以使用 CSS 样式进行自定义，以匹配网站的整体设计。例如，以下 CSS 代码将文本域设置为特定高度和宽度，并添加一个边框：</p> <pre><code class="language-php"><code class="language-css">textarea { height: 100px; width: 500px; border: 1px solid #ccc; }</code></code></pre> <p><strong>提升网站表单功能</strong></p> <p>通过利用文本域标签，网站开发人员可以创建灵活且强大的表单，收集广泛的文本数据，使其成为现代网站设计中不可或缺的工具。它们不仅允许用户输入文本，还提供各种选项来自定义外观、验证输入并提升整体表单功能。</p></div><div class="readOriginal"><a href="https://m.528045.com/article/18912bfaad.html" class="original">阅读原文</a><a href="/api/report.php?target=https://m.528045.com/article/18912bfaad.html" class="complain"><span class="artM art_jinggao"></span>内容投诉</a></div><div class="myShow contentBtmshow"><div class="mzsming"><p class="mzsm_title">免责声明：</p><p>① 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