textarea如何实现水印提示 - 问答

要实现水印提示，可以通过在标签中使用placeholder属性来添加水印提示。placeholder属性允许您在文本框中显示灰色文本，以指示用户应该输入的内容。</p> <p>示例代码如下：</p> <pre class="hljs"><code><span class="hljs-tag"><<span class="hljs-name">textarea</span> <span class="hljs-attr">placeholder</span>=<span class="hljs-string">"请输入您的内容"</span>></span><span class="hljs-tag"></<span class="hljs-name">textarea</span>></span> </code></pre> <p>这样，当用户未输入任何内容时，文本框中会显示灰色的“请输入您的内容”提示文字，一旦用户开始输入内容，水印提示就会消失。这是一种简单而有效的方法来实现水印提示。</p> </p> </div> <p class="tj-wenzhang recommend-article"></p> <div class="zixun-tj-product adv-bottom"></div> <div class="user-estimate clearfix"> <div class="like"><i></i><span>0</span> 赞</div> <div class="dislike"><i></i><span>0</span> 踩</div> </div> </div> </div> <div class="prve-next-qanews"> <ul> </ul> </div> <div class="hot-answer"> <div class="hot-answer-tit"><h2>最新问答</h2></div> <div class="hot-answer-list"> <ul> <li> <a href="/ask/63753563.html">MySQL的Btree索引有哪些应用场景</a> </li> <li> <a href="/ask/23676370.html">Emacs中MySQL错误处理机制是怎样</a> 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