也许它可以帮助你。我创建了这个指令来验证表单中两个值的相等性。指令检查相等性并将手动验证结果设置为表单。

指令示例：

angular
    .module('app')
    .directive('sameAs', sameAs);

function sameAs() {
    var directive = {
        link: link,
        restrict: 'A',
        require: 'ngModel',
        scope: {
            sameAs: '='
        }
    };
    return directive;

    ////////////

    function link(scope, element, attrs, ctrl) {
        ctrl.$validators.match = function (modelValue, viewValue) {
            return viewValue === scope.sameAs;
        };
    }
}

使用示例：

<form name="testForm">
    <input name="newPassword" type="password"
           ng-model="formData.newPassword">
    <input name="confirmPassword" type="password"
           ng-model="formData.confirmPassword"
           same-as="formData.newPassword">
    <span ng-show="testForm.confirmPassword.$error.match">Passwords is not the same!</span>
</form>