javascript - 如果验证成功，如何将span类添加到span元素？

我是jQuery的新手，正在尝试将其用于注册页面的验证。这是我的HTML<div class="form-group"> <label for="inputFirstName" class="col-lg-3 control-label">First name</label> <div class="col-lg-6"> <input type="text" class="form-control" id="inputFirstName" name="inputFirstName" placeholder="First name"> <span class="" aria-hidden="true"></span> <-- this span </div></div>这是我的javascript$(document).ready(function () {$('#registration-form').validate({ rules: { inputFirstName: { required: true, }, }, highlight: function (element) { $(element).closest('.form-group').removeClass('has-success has-feedback').addClass('has-error has-feedback'); //want to remove 'glyphicon glyphicon-ok form-control-feedback' and then add some other class to span }, success: function (element) { $(element).closest('.form-group').removeClass('has-error has-feedback').addClass('has-success has-feedback'); //want to insert 'glyphicon glyphicon-ok form-control-feedback' to span }});});如果验证成功，我想将glyphicon glyphicon-ok form-control-feedback添加到跨度我尝试添加$(element).closest('span').addClass("glyphicon glyphicon-ok form-control- feedback");但这没有用。我该如何实现？谢谢 最佳答案 步骤1输入您的跨度ID    第2步成功内使用jquery的addClass（）方法（如下所示）由IntelliJ IDEA创建。用户：RaghavFTW  日期：2015年4月7日  时间：15：13  要更改此模板，请使用File |设置|文件模板。-％>                                                            注册                                            名字                                                                                       placeholder =“名字”>                                                                                                                     姓氏                                                                                       placeholder =“姓氏”>                                                                                                                     用户名                                                                                       placeholder =“ Username”>                                                                                                                     密码                                                                                       placeholder =“ Password”>                                                                                                                     电子邮件                                                                                       placeholder =“ Email”>                                                                                                                     地址                                                                                          name =“ address”>                                                                                                                      性别                                                                                                                                                                   检查=“”>                                    男                                                                                                                                                                        女                                                                                                                                                                                取消                            提交                                                                                         $（document）.ready（function（）{        $（'＃registration-form'）。validate（{            规则：{                inputUsername：{                    最小长度：5                    必填：true                }，                输入密码： {                    必填：是，                    最小长度：6                }，                确认密码： {                    必填：是，                    最小长度：6                    equalTo：“ #password”                }，                inputEmail：{                    必填：是，                    电子邮件：true                }，                地址： {                    最小长度：10，                    必填：true                }，                inputFirstName：“必需”，            }，            高亮显示：功能（元素）{                $（element）.closest（'。form-group'）。removeClass（'has-success has-feedback'）。addClass（'has-error has-feedback'）;             // var Identification = element.parent（）;             // console.log（identify）;             // $（“ span [for ='” + identify +“']”）。removeClass（“ glyphicon glyphicon-ok form-control-feedback”）;            }，            成功：功能（元素）{                $（element）.closest（'。form-group'）。removeClass（'has-error has-feedback'）。addClass（'has-success has-feedback'）;                $（element）.remove（）;                var Identification = element.attr（“ for”）;                console.log（identify）;                $（“ span [for ='” + identify +“']”）。addClass（“ glyphicon glyphicon-ok form-control-feedback”）;            }        }）;        $（'＃search-form'）。validate（{            规则：{                搜索：“必填”            }，            高亮显示：功能（元素）{                $（element）.closest（'。form-group'）。removeClass（'has-success'）。addClass（'has-error'）;            }，            成功：功能（元素）{                $（element）.closest（'。form-group'）。removeClass（'has-error'）。addClass（'has-success'）;            }        }）;        $（“ input，textarea”）。change（function（）{            varidentify = this.id;            console.log（identify）;            $（“ span [for ='” + identify +“']”）。removeClass（“ glyphicon glyphicon-ok form-control-feedback”）;        }）;    }）    ; //结束document.ready关于javascript - 如果验证成功，如何将span类添加到span元素？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/31221364/