jQuery+ajax实现修改密码验证功能实例详解

<script type="text/JavaScript">  //获取url中的参数  $(function(){    var userName = window.location.href;    var aa = userName.indexOf("=");      console.log(userName);    if (aa == -1)      return "";    userName=userName.substring(aa+1);    //给hidden赋值并显示    $("#userName").val(userName).attr("type","text");    //ajax请求修改密码    var rePassword = $("#repeatPassword").val();    //6到15位字母或数字    var reg=/^[0-9a-zA-Z]{6,15}$/;    //新密码校验    $("#newPassword").blur(function(){      $("#msg").css("display","none");      var newPassword = $("#newPassword").val();      if(newPassword==""||newPassword==null){       $("#msg").html("请输入新密码！").css("display","block");      }elseif(!reg.test(newPassword)){       $("#msg").html("密码格式不正确,请重新输入！").css("display","block");      }    });    //重复密码校验    $("#repeatPassword").blur(function(){      var newPass = $("#newPassword").val();      var repPass = $("#repeatPassword").val();      if(newPass != repPass){       $("#msg").html("两次输入密码不一致,请重输！").css("display","block");      }    });    //表单提交前校验    $("#updateBtn").click(function(){      var flag = true;      var newPass = $("#newPassword").val();      var repPass = $("#repeatPassword").val();      var reg1=/^[0-9a-zA-Z]{6,15}$/;      if(!reg1.test(newPass)||newPass!=repPass||newPass ==""||newPass==null){       flag = false;      }      if(flag){       $.ajax({         url:"/HuaMuWebsite/userManage/editPassword?userName="+userName,         type:"POST",         async:false,         data:$("#fm").serialize(), //表单数据序列化, 可以对form表单进行序列化，从而将form表单中的所有参数传递到服务端。         success:function(data){         //json字符串转为json对象         var jsonObj=eval("("+data+")");         if(jsonObj.success != null){           alert(jsonObj.success);           window.location.href="/HuaMuWebsite/admin/login.html" rel="external nofollow" ;         }else{           alert(jsonObj.failure);         }       },       error:function(e){         alert("请求出错！");       }       });      }   });  });</script>