<form name="form">    <input type="password" name="password" ng-model="password" required placeholder="請輸入密碼">    <input type="password" name="passwordConfirm" ng-model="passwordConfirm" equal-to="password" placeholder="請再次輸入密碼">    <span ng-show="form.passwordConfirm.$error.equalTo">兩次密碼不一致</span>  </form>

angular.module("Valid",[]).directive("equalTo", function () {  return {    require: "ngModel",    link: function (scope, ele, attrs, ctrl) {      console.log(scope);//打印當前作用域      console.log(attrs);//打印當前標簽屬性列表      console.log(ctrl);//打印當前ctrl      var target = attrs["equalTo"];//獲取自定義指令屬性鍵值      if (target) {//判斷鍵是否存在        scope.$watch(target, function () {//存在啟動監聽其值          ctrl.$validate()//每次改變手動調用驗證        })         // 獲取當前模型控制器的父控制器FormController        var targetCtrl = ctrl.$$parentForm[target];//獲取指定模型控制器        console.log(targetCtrl)        ctrl.$validators.equalTo = function (modelValue, viewVale) {//自定義驗證器內容                    var targetValue = targetCtrl.$viewValue;//獲取password的輸入值          return targetValue == viewVale;//是否等于passwordConfirm的值        }        ctrl.$formatters.push(function (value) {          console.log("正在進行數據格式化的值:",value)          return value;        })        ctrl.$parsers.push(function (value) {          console.log("正在進行數據轉換的值:",value)          return value;        })      }    }  }})