Question

我有html表单，我希望在启动表单时保持提交按钮禁用，因为默认情况下它已启用并且即使控件为空也需要输入。这是我的代码。输入数据后，它可以正常工作。然后将其从输入控件中删除，但默认情况下不会。

<html>
   <head>
      <title>Angular JS Forms</title>
      <script src = "http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
   </head>
   <body>

      <h2>AngularJS Sample Application</h2>
      <div ng-app = "mainApp" ng-controller = "studentController">

         <form name = "studentForm" novalidate>
            <table border = "0">
               <tr>
                  <td>Enter first name:</td>
                  <td><input name = "firstname" placeholder="name"  type = "text" ng-model = "firstName" required>
                     <span style = "color:red" ng-show = "studentForm.firstname.$dirty && studentForm.firstname.$invalid">
                        <span ng-show = "studentForm.firstname.$error.required">First Name is required.</span>
                     </span>
                  </td>
               </tr>

               <tr>
                  <td>Enter Domain name: </td>
                  <td><input name = "domain" type = "text" ng-model = "domain" placeholder="domain" required>
                     <span style = "color:red" ng-show = "studentForm.domain.$dirty && studentForm.domain.$invalid">
                        <span ng-show = "studentForm.domain.$error.required">Last Name is required.</span>
                     </span>
                  </td>
               </tr>

               <tr>
                  <td>Email: </td><td><input name = "email" type = "email"  ng-model = "email" placeholder="Email" length = "100" required>
                     <span style = "color:red" ng-show = "studentForm.email.$dirty && studentForm.email.$invalid">
                        <span ng-show = "studentForm.email.$error.required">Email is required.</span>
                        <span ng-show = "studentForm.email.$error.email">Invalid email address.</span>
                     </span>
                  </td>
               </tr>

               <tr>
                  <td>
                     <button ng-click = "reset()">Reset</button>
                  </td>
                  <td>
                     <button ng-disabled = "studentForm.firstname.$dirty &&
                        studentForm.firstname.$invalid || studentForm.domain.$dirty &&
                        studentForm.domain.$invalid || studentForm.email.$dirty &&
                        studentForm.email.$invalid" ng-click="submit()">Submit</button>
                  </td>
               </tr>

            </table>
         </form>
      </div>

      <script>
         var mainApp = angular.module("mainApp", []);

         mainApp.controller('studentController', function($scope) {
            $scope.reset = function(){
            }

            $scope.reset();
         });
      </script>

   </body>
</html>

Answer 1

这会有所帮助，

        <button ng-disabled = "studentForm.$invalid" ng-click="submit()">Submit</button>

只需在studentForm.firstname.$pristine ||的开头添加ng-disabled。

Answer 2

您需要为所有输入元素提供$ pristine

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2016.1.112/js/kendo.all.min.js"></script>


<div id="consumable" data-template="testTemplate" data-bind="source:dataEntryStyle"></div>

<script type="text/x-kendo-template" id="testTemplate">
  <span data-bind="text: dataEntryStyle"></span>
</script>

Answer 3

这总是对我有用 -

<button ng-disabled = "!studentForm.firstname || !studentForm.domain || !studentForm.email">Submit</button>

想要在表单加载

3 个答案: