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How to implement form validation function when AngularJS gets focus and loses focus

小云云
小云云Original
2018-01-22 10:01:561874browse

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.

The example in this article describes the form validation function implemented by AngularJS to obtain focus and lose focus. Share it with everyone for your reference, the details are as follows: 


<!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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