🌈 搜索
📅 最后修改于: 2021-08-31 07:52:46 🧑 作者: Mango
HTML 中的 autofocus 属性用于指定元素在页面加载时应获得焦点。它是一个布尔属性。
注意：它仅支持以下元素：、、 和 </p> <p><strong>句法：</strong> </p> <div class="hcb_wrap"> <pre class="prism line-numbers lang-html" data-lang="HTML"><code class="replace"><elementName autofocus></code></pre> </div> <p><strong>示例 1：</strong> </p> <div class="hcb_wrap"> <pre class="prism line-numbers lang-html" data-lang="HTML"><code class="replace"><!DOCTYPE html> <html> <head> <title>HTML autofocus Attribute</title> </head> <body style = "text-align: center;"> <h1 style = "color: green;">GeeksforGeeks</h1> <h2>HTML autofocus Attribute</h2> <form> <label>First Name: <input type="text" autofocus placeholder = "Enter Name"> </label> </form> </body> </html> </code></pre> </div> <p><strong>输出：</strong> <br/><img alt="自动对焦" class="img-fluid" src="https://mangodoc.oss-cn-beijing.aliyuncs.com/geek8geeks/HTML_%7C_autofocus_Attribute_0.jpg"/></p> <p></p> <div class="_ap_apex_ad" id="d6f45c53-ff16-4cc5-8b91-eb6ee7037116"></div> <p></p> <p><strong>示例 2：</strong> </p> <div class="hcb_wrap"> <pre class="prism line-numbers lang-html" data-lang="HTML"><code class="replace"><!DOCTYPE html> <html> <head> <title>HTML autofocus Attribute</title> </head> <body style = "text-align: center;"> <h1 style = "color: green;">GeeksforGeeks</h1> <h2>HTML autofocus Attribute</h2> <textarea rows="3" cols="30" autofocus> A computer science portal for geeks.