要添加反馈图标，请在Bootstrap中使用.has-feedback类。
您可以尝试运行以下代码来设置反馈图标-
<!DOCTYPE html> <html> <head> <title>Bootstrap Example</title> <link href = "/bootstrap/css/bootstrap.min.css" rel = "stylesheet"> <script src = "/scripts/jquery.min.js"></script> <script src = "/bootstrap/js/bootstrap.min.js"></script> </head> <body> <div class = "form-group has-feedback"> <label class = "col-sm-2 control-label" for = "inputSuccess">Example</label> <div class="col-sm-10"> <input type = "text" class="form-control" id = "inputSuccess"> <span class = "glyphicon glyphicon-ok form-control-feedback"></span> </div> </div> </body> </html>