Tutorial 11.7 Modifying Build In Validators

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******************************************INDEX.HTML*****************************************************
<!doctype html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Example - example-forms-modify-validators-production</title>
 

  <script src="//code.angularjs.org/snapshot/angular.min.js"></script>
  <script src="script.js"></script>
 

 
</head>
<body ng-app="form-example-modify-validators">
  <form name="form" class="css-form" novalidate>
  <div>
    <label>
      Overwritten Email:
      <input type="email" ng-model="myEmail" overwrite-email name="overwrittenEmail" />
    </label>
    <span ng-show="form.overwrittenEmail.$error.email">This email format is invalid!</span><br>
    Model: {{myEmail}}
    </div>
</form>
</body>
</html>
******************************************INDEX.HTML*****************************************************
********************************************script.js***************************************************
(function(angular) {
  'use strict';
var app = angular.module('form-example-modify-validators', []);

app.directive('overwriteEmail', function() {
  var EMAIL_REGEXP = /^[a-z0-9!#$%&'*+/=?^_`{|}~.-]+@example\.com$/i;

  return {
    require: '?ngModel',
    link: function(scope, elm, attrs, ctrl) {
      // only apply the validator if ngModel is present and AngularJS has added the email validator
      if (ctrl && ctrl.$validators.email) {

        // this will overwrite the default AngularJS email validator
        ctrl.$validators.email = function(modelValue) {
          return ctrl.$isEmpty(modelValue) || EMAIL_REGEXP.test(modelValue);
        };
      }
    }
  };
});
})(window.angular);
********************************************script.js***************************************************

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