angularjs 表单密码验证自定义指令实现代码

<form name="form">    <input type="password" name="password" ng-model="password" required placeholder="请输入密码">    <input type="password" name="passwordConfirm" ng-model="passwordConfirm" equal-to="password" placeholder="请再次输入密码">    <span ng-show="form.passwordConfirm.$error.equalTo">两次密码不一致</span>  </form>

angular.module("Valid",[]).directive("equalTo", function () {  return {    require: "ngModel",    link: function (scope, ele, attrs, ctrl) {      console.log(scope);//打印当前作用域      console.log(attrs);//打印当前标签属性列表      console.log(ctrl);//打印当前ctrl      var target = attrs["equalTo"];//获取自定义指令属性键值      if (target) {//判断键是否存在        scope.$watch(target, function () {//存在启动监听其值          ctrl.$validate()//每次改变手动调用验证        })         // 获取当前模型控制器的父控制器FormController        var targetCtrl = ctrl.$$parentForm[target];//获取指定模型控制器        console.log(targetCtrl)        ctrl.$validators.equalTo = function (modelValue, viewVale) {//自定义验证器内容                    var targetValue = targetCtrl.$viewValue;//获取password的输入值          return targetValue == viewVale;//是否等于passwordConfirm的值        }        ctrl.$formatters.push(function (value) {          console.log("正在进行数据格式化的值:",value)          return value;        })        ctrl.$parsers.push(function (value) {          console.log("正在进行数据转换的值:",value)          return value;        })      }    }  }})