angularJS submit form (form)_AngularJS

<script><br> ​ app = angular.module("app",[]);<br> App.directive('test',function() {<br>　　　　　 //Form form instructions have a default controller as the fourth parameter<br>         var link = function($scope, $element, $attrs, $ctrl) {<br> $scope.do = function() {<br> //$ctrl.$setDirty();<br>                     console.log($ctrl.$pristine); //Has the form not been touched?<br>                      console.log($ctrl.$dirty); //Whether the form has been passive<br>                     console.log($ctrl.$valid); //Whether the form has been verified <br>                       console.log($ctrl.$invalid); //Is there any error in the form<br>                          console.log($ctrl.$error); //Fields with errors in the form<br>             }<br> }<br>          return {<br>                compile: function() {<br>                     return link<br>             },<br>               require: 'form',<br>              restrict: 'A'<br> }<br> });<br> ​ app.controller('TestCtrl', function($scope){<br> ​​​​ //If there is no controller, this thing will not be initialized..<br>         });<br> </script>