如何使用 JavaScript/jQuery 将 textarea 滚动条设置为默认底部？给定一个包含 元素的 HTML 文档，任务是在 jQuery 的帮助下将滚动条的位置设置为 <textarea> 的底部。</p><p><strong>方法一：</strong></p><ul><li>获取 textarea<strong>的 scrollHeight 属性。</strong></li><li>使用<strong>scrollTop 属性</strong>使用 jQuery 设置垂直滚动条的位置。</li></ul><p><strong>示例：</strong>此示例实现了上述方法。 </p><div class="hcb_wrap"><pre class="prism undefined-numbers lang-js" data-lang="JavaScript"><code class="replace"><!DOCTYPE HTML> <html> <head> <title> JavaScript | Set textarea scroll bar to bottom as a default. </title> <script src = "https://ajax.googleapis.com/ajax/libs/jquery/3.4.0/jquery.min.js"> </script> <style> #t { height: 100px; width: 300px; background: green; color: white; text-align:justify; } </style> </head> <body style = "text-align:center;"> <h1 style = "color:green;" > GeeksForGeeks </h1> <p id = "GFG_UP" style = "font-size: 15px; font-weight: bold;"> </p> <textarea id = "t"> GeeksforGeeks is a Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes etc. It also contains the practice section which is helpful for practicing the data structure and algorithms questions. GeeksforGeeks provides placement course, DSA class, Machine learning class and other online and offline courses which will help in placement and also growing the knowledge. click here