javascript - $setValidity not working -

i have condition if user enters either contact number or email form should considered valid, make work tried use $setvalidity not working, below code:

if($scope.contact.contactnumber || $scope.contact.email) {     $scope.addcontactform.contactnumber.$setvalidity('required', false);     $scope.addcontactform.email.$setvalidity('required', false);      // in console show invalid true & valid false     console.log('scope:', $scope.addcontactform); } 

it because doing wrong. should pass true second argument if want set field valid state. read documentation.

below example how use $setvalidity correctly.

angular.module('app', []);    angular.module('app').controller('example', function () {    this.setvalid = () => {      this.form.contactnumber.$setvalidity('required', true);      this.form.email.$setvalidity('required', true);    };        this.setinvalid = () => {      this.form.contactnumber.$setvalidity('required', false);      this.form.email.$setvalidity('required', false);    };  });

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.5/angular.js"></script>  <div ng-app="app" ng-controller="example example">    <form name="example.form">      <input type="text" name="contactnumber" ng-model="contactnumber" required><br>      <input type="text" name="email" ng-model="email" require>    </form>    <br>    $invalid = {{example.form.$invalid}}, $valid = {{example.form.$valid}}<br>    <button type="button" ng-click="example.setvalid()">set valid</button>    <button type="button" ng-click="example.setinvalid()">set invalid</button>  </div>