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<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap 实例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.2/dist/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.2/dist/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="container mt-3"> <h2>禁用和只读</h2> <p>请使用 disabled 和/或 readonly 属性禁用输入字段：</p> <form> <input type="text" class="form-control" placeholder="普通输入控件"> <input type="text" class="form-control mt-3" placeholder="被禁用的输入控件" disabled> <input type="text" class="form-control mt-3" placeholder="只读的输入控件" readonly> </form> </div> </body> </html>