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??textarea的高度自適應(yīng)?

發(fā)布時(shí)間：2025-03-23 14:05:48來源：

在日常開發(fā)中，我們經(jīng)常需要讓``標(biāo)簽隨著內(nèi)容增加自動調(diào)整高度，尤其是當(dāng)文字行數(shù)達(dá)到一定值時(shí)。這不僅能提升用戶體驗(yàn)，還能讓頁面更加整潔美觀。那么，該如何實(shí)現(xiàn)呢？??</p><p>首先，通過監(jiān)聽`input`事件可以實(shí)時(shí)獲取輸入內(nèi)容。接著，利用CSS中的`scrollHeight`屬性動態(tài)設(shè)置`textarea`的高度。例如：</p><p>```css</p><p>textarea {</p><p>resize: none; / 禁止手動拖動 /</p><p>overflow: hidden;</p><p>}</p><p>```</p><p>同時(shí)，結(jié)合JavaScript代碼：</p><p>```javascript</p><p>const textarea = document.querySelector('textarea');</p><p>textarea.addEventListener('input', () => {</p><p>textarea.style.height = 'auto'; // 恢復(fù)默認(rèn)高度</p><p>textarea.style.height = `${textarea.scrollHeight}px`; // 動態(tài)調(diào)整高度</p><p>});</p><p>```</p><p>這樣一來，當(dāng)行數(shù)增多時(shí)，`textarea`會自動擴(kuò)展高度，確保內(nèi)容完整顯示。??</p><p>這樣的功能不僅實(shí)用，還體現(xiàn)了對細(xì)節(jié)的關(guān)注，讓交互更加流暢！??</p>  <div id="hnxxdnpvx" class="clear"></div> <div class="hnxxdnpvx" id="SGOContentPage" class="SiteGeneralContentPage" style="margin-top:15px;"></div> <div id="hnxxdnpvx" class="article_footer clearfix"> <div id="hnxxdnpvx" class="fr tag"> 標(biāo)簽： </div> </div> <script> if (isMobile()){ document.write('<div style="text-align:center;margin-top:10px;margin-left:-12px;"><script>wap_show_sosuo();<\/script><\/div>'); } </script> <div id="hnxxdnpvx" class="content_banquan"> <p><span id="hnxxdnpvx" class="strong">免責(zé)聲明：本文為轉(zhuǎn)載，非本網(wǎng)原創(chuàng)內(nèi)容，不代表本網(wǎng)觀點(diǎn)。其原創(chuàng)性以及文中陳述文字和內(nèi)容未經(jīng)本站證實(shí)，對本文以及其中全部或者部分內(nèi)容、文字的真實(shí)性、完整性、及時(shí)性本站不作任何保證或承諾，請讀者僅作參考，并請自行核實(shí)相關(guān)內(nèi)容。</span></p> </div> </div> <script> if (isMobile()){ document.write('<div style="text-align:center;margin-left:-15px;"><script>wap_show_tag_under9();<\/script><\/div>'); } </script> <div id="hnxxdnpvx" class="listnews"> <div id="hnxxdnpvx" class="title1"><h3><a href="javascript:void(0)">相關(guān)閱讀</a></h3></div> <ul> <li> <a href="http://www.trafficexploderbot.com/kj/202503/87425.html" target="_blank">??textarea的高度自適應(yīng)?</a> </li> <li> <a href="http://www.trafficexploderbot.com/kj/202503/87404.html" target="_blank">??買電腦是去電腦城買比較好還是在網(wǎng)上買比較好？??</a> </li> <li> <a href="http://www.trafficexploderbot.com/kj/202503/87381.html" target="_blank">?? 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