Angular Material - 輸入控制元件

md-input-container 是一個 Angular 指令，它是一個容器元件，包含任何<input> 或 <textarea> 元素作為子元素。它還支援使用標準 ng-messages 指令進行錯誤處理，並使用 ngEnter/ngLeave 事件或 ngShow/ngHide 事件為訊息新增動畫。

屬性

下表列出了md-input-container的不同屬性的引數和描述。

序號	引數和描述
1	md-maxlength 此輸入允許的最大字元數。如果指定了此屬性，則輸入下方會顯示一個字元計數器。md-maxlength 的目的是顯示最大長度計數器文字。如果您不想要計數器文字，而只需要“簡單”驗證，可以使用“simple” ng-maxlength 或 maxlength 屬性。
2	aria-label 如果沒有標籤，則需要 aria-label。如果沒有標籤，控制檯將記錄警告訊息。
3	placeholder 當沒有標籤時，可以使用 aria-label 的替代方法。佔位符文字將複製到 aria-label 屬性。
4	md-no-autogrow 存在此屬性時，文字區域不會自動增長。
5	md-detect-hidden 存在此屬性時，文字區域在隱藏後顯示時將被正確調整大小。出於效能原因，預設情況下此屬性為關閉狀態，因為它保證每次摘要週期都會重新計算佈局。

示例

以下示例顯示了 md-input-container 指令和輸入的使用。

am_inputs.htm

線上演示

<html lang = "en">
   <head>
      <link rel = "stylesheet"
         href = "https://ajax.googleapis.com/ajax/libs/angular_material/1.0.0/angular-material.min.css">
      <script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
      <script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular-animate.min.js"></script>
      <script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular-aria.min.js"></script>
      <script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular-messages.min.js"></script>
      <script src = "https://ajax.googleapis.com/ajax/libs/angular_material/1.0.0/angular-material.min.js"></script>
      <link rel = "stylesheet" href = "https://fonts.googleapis.com/icon?family=Material+Icons">
      <style>
        
      </style>
      <script language = "javascript">
         angular
            .module('firstApplication', ['ngMaterial'])
            .controller('inputController', inputController);

         function inputController ($scope) {
            $scope.project = {
               comments: 'Comments',    
            };
         }                 
      </script>     	  
   </head>
   
   <body ng-app = "firstApplication"> 
      <div id = "inputContainer" class = "inputDemo"
         ng-controller = "inputController as ctrl" ng-cloak>
         <md-content layout-padding>
            <form name = "projectForm">
               
               <md-input-container class = "md-block">
                  <label>User Name</label>
                  <input required name = "userName" ng-model = "project.userName">
                  <div ng-messages = "projectForm.userName.$error">
                     <div ng-message = "required">This is required.</div>
                  </div>
               </md-input-container>
               
               <md-input-container class = "md-block">
                  <label>Email</label>
                  <input required type = "email" name = "userEmail"
                     ng-model = "project.userEmail"
                     minlength = "10" maxlength = "100" ng-pattern = "/^.+@.+\..+$/" />
                  <div ng-messages = "projectForm.userEmail.$error" role = "alert">
                     <div ng-message-exp = "['required', 'minlength', 'maxlength',
                        'pattern']">
                        Your email must be between 10 and 100 characters long and should
                        be a valid email address.
                     </div>
                  </div>
               </md-input-container>
               
               <md-input-container class = "md-block">
                  <label>Comments</label>
                  <input md-maxlength = "300" required name = "comments"
                     ng-model = "project.comments">
                  <div ng-messages = "projectForm.comments.$error">
                     <div ng-message = "required">This is required.</div>
                     <div ng-message = "md-maxlength">The comments has to be less
                        than 300 characters long.</div>
                  </div>
               </md-input-container>
               
            </form>
         </md-content>
      </div>
   </body>
</html>

結果

驗證結果。

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