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Detailed explanation of the form validation function when gaining focus and losing focus implemented by AngularJS

小云云
小云云Original
2018-01-03 11:05:413224browse

This article mainly introduces the form verification function implemented by AngularJS to obtain focus and lose focus. It involves AngularJS's use of ng-blur and ng-focus to monitor form event related operating techniques. Friends who need it can refer to it. I hope it can help. Everyone. 


<!DOCTYPE html>
<html ng-app="formExample">
<head>
  <meta charset="UTF-8">
  <title></title>
  <script src="../js/angular.js"></script>
  <script>
    angular.module(&#39;formExample&#39;, [])
        .controller(&#39;FormController&#39;, [&#39;$scope&#39;, function($scope)
        {
          $scope.userType = &#39;guest&#39;;
          $scope.change = false;
        }]);
  </script>
</head>
<body>
<form name="myForm" ng-controller="FormController">
  userType: <input name="input" ng-model="userType" ng-blur="change=true" ng-focus="change=false" required>
  <span class="error" ng-show="myForm.input.$error.required && change">必填项</span><br>
</form>
</body>
</html>

Running effect:

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