textarea只读属性，蹲一个懂行的，求解答求解答！
霍金
问答领域知识达人
2025-12-17 19:24:03
【textarea只读属性】在HTML中，`` 是一个用于创建多行文本输入框的标签。它常用于表单中，让用户能够输入和编辑多行文本内容。有时，为了防止用户修改某些内容，可以使用 `readonly` 属性来设置 `<textarea>` 为只读状态。</p><p>`<textarea>` 的 `readonly` 属性是一个布尔属性，表示该文本区域不可被用户编辑。一旦设置了 `readonly`，用户无法通过键盘或鼠标进行任何修改操作，但可以通过 JavaScript 进行程序上的更改。该属性对表单提交也有一定影响，因为只读字段通常不会被提交到服务器，除非特别设置。</p><p>使用 `readonly` 可以提高用户体验，避免误操作，同时也能确保数据的完整性。在实际开发中，合理使用 `readonly` 能有效提升界面的可用性和安全性。</p><p>表格：`textarea` 只读属性说明</p><table><tbody><tr><td> 属性名称 </td><td> 是否支持 </td><td> 说明 </td></tr><tr><td> `readonly` </td><td> 是 </td><td> 设置文本区域为只读状态，用户无法手动修改内容。</td></tr><tr><td> 默认值 </td><td> 无 </td><td> 不设置时，文本区域默认为可编辑状态。</td></tr><tr><td> 与 `disabled` 区别 </td><td> 是 </td><td> `disabled` 禁用元素，不能获取焦点，也不会被提交；`readonly` 允许聚焦，但不能编辑。 </td></tr><tr><td> JavaScript 修改 </td><td> 否 </td><td> 用户无法通过 UI 修改，但可通过 JavaScript 动态更改内容。</td></tr><tr><td> 表单提交 </td><td> 否 </td><td> 默认情况下，只读字段不会被包含在表单提交的数据中。</td></tr><tr><td> 适用场景 </td><td> 是 </td><td> 用于展示固定信息、预览内容或防止用户误操作。</td></tr></tbody></table><p>如需进一步控制 `<textarea>` 的行为，可以结合 `disabled` 或 `contenteditable` 等属性进行更复杂的交互设计。</p><style>table,tr{width: 100%;text-align: center;color: #333;font-size: 16px;line-height: 1.8em;margin-bottom: 32px;border: 1px solid #333;empty-cells:show;}table tr th {border: 1px solid #333;text-align: center;font-weight: 600;background: #eee;}table tr td {border: 1px solid #333;text-align: center}</style> </div> </div> </div> <!--内容关联投票--> <div class="clear"></div> <div id="SGOContentPage" class="SiteGeneralContentPage" style="margin-top:15px;"></div> <div class="article_footer clearfix"> <div class="fr tag"> 标签： <a href="http://www.weirz.com/tag/textareazhidushuxing/" target="_blank">textarea只读属性</a> </div> </div> <div class="content_banquan"> <p><span class="strong">免责声明：本答案或内容为用户上传，不代表本网观点。其原创性以及文中陈述文字和内容未经本站证实，对本文以及其中全部或者部分内容、文字的真实性、完整性、及时性本站不作任何保证或承诺，请读者仅作参考，并请自行核实相关内容。 如遇侵权请及时联系本站删除。</span></p> </div> <script> if (isMobile()){ document.write('<div style="text-align:center;margin-top:10px;margin-left:-15px;"><script>wap_show_tag_under9();<\/script><\/div>'); 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