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要實(shí)現(xiàn)水印提示，可以通過在標(biāo)簽中使用placeholder屬性來添加水印提示。placeholder屬性允許您在文本框中顯示灰色文本，以指示用戶應(yīng)該輸入的內(nèi)容。</p> <p>示例代碼如下：</p> <pre class="hljs"><code><span id="6tlr1om" class="hljs-tag"><<span id="nkzy61f" class="hljs-name">textarea</span> <span id="ymoljc8" class="hljs-attr">placeholder</span>=<span id="phifcdt" class="hljs-string">"請(qǐng)輸入您的內(nèi)容"</span>></span><span id="m6pwqxq" class="hljs-tag"></<span id="ftacrb0" class="hljs-name">textarea</span>></span> </code></pre> <p>這樣，當(dāng)用戶未輸入任何內(nèi)容時(shí)，文本框中會(huì)顯示灰色的“請(qǐng)輸入您的內(nèi)容”提示文字，一旦用戶開始輸入內(nèi)容，水印提示就會(huì)消失。這是一種簡單而有效的方法來實(shí)現(xiàn)水印提示。</p> </p> </div> <p class="tj-wenzhang recommend-article"></p> <div id="yacs2zm" class="zixun-tj-product adv-bottom"></div> <div id="ckzgyvo" class="user-estimate clearfix"> <div id="6uwmxku" class="like"><i></i><span>0</span> 贊</div> <div id="spipwy5" class="dislike"><i></i><span>0</span> 踩</div> </div> </div> </div> <div id="bqw6r1x" class="prve-next-qanews"> <ul> </ul> 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textarea如何實(shí)現(xiàn)水印提示