angularJS 自定義指令表單驗證

<form name="form">
        <input type="text" placeholder="請輸入賬號" />
        <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, viewValue) {//自定義驗證器內容
                    
                    var targetValue = targetCtrl.$viewValue;//獲取password的輸入值

                    return targetValue == viewValue;//是否等於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;
                })
            }
        }
    }
})