javascript - 电子邮件黑名单和验证

Question

我是 Angular 新手，我尝试进行简单的黑名单检查。目前我有两个文本可以用 ng-show 显示和隐藏。第一个应该在邮件模式错误时显示，而在正确和/或在黑名单上时隐藏。

我的问题是我不知道如何实现该模型。目前它是通过复选框模拟的。也许有人有提示。

<div class="controls">
  <input type="checkbox" ng-model="checked" ng-init="checked=true" /><br/>
  <input type="email" id="inputEmail" placeholder="Email" ng-model="email" required>
<div class="hint">
    <h4 name="mailValidator" ng-if="checked" ng-show="true">Invalid Email</h4>
    <h4 name="checkBlacklist" ng-if="!checked" ng-show="true">Email is not allowed</h4>
</div>

Here is a Fiddle-Demo

Answer 1

我为您的问题创建了 JSFiddle。

JSFiddle

查看:

<div ng-controller="MyCtrl">
     <input placeholder="Email" ng-model="email" ng-pattern="emailRegExp" ng-class="{ error: !email }" />
     <h4 name="mailValidator" ng-show="!email">Invalid Email</h4>
     <h4 name="checkBlacklist" ng-show="email && inBlackList">Email is not allowed</h4>
</div>

Controller :

function MyCtrl($scope) {
    $scope.inBlackList = false;

    //get from DB in your case
    var bannedEmail = ['qwe@qwe.qwe','qwe1@qwe.qwe','qwe2@qwe.qwe']

    $scope.emailRegExp = /^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/;
    $scope.$watch('email', function(newValue) {
       if(newValue){
           if(bannedEmail.indexOf(newValue) > -1) {
               $scope.inBlackList = true;
           }
           else {
               $scope.inBlackList = false;
           }
       }
   });      
}