Selects

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2023-12-01

md-select ，一个Angular指令用于显示选择框，由ng-model限定。

属性 - md-radio-group

下表列出了md-radio-group的不同属性的参数和描述。

Sr.No	参数和描述
1	* ng-model 该模型！
2	multiple 是否是多重的。
3	md-on-close 选择关闭时要评估的表达式。
4	placeholder 占位符提示文本。
5	baria-label 可访问性的可选标签。仅在没有占位符或显式标签的情况下才有必要。
6	md-container-class 要应用于.md-select-menu-container元素的类列表（用于自定义样式）。

例子 (Example)

以下示例展示了使用选择框的md-select showcase使用。

am_selects.htm

<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">
      <script language = "javascript">
         angular
            .module('firstApplication', ['ngMaterial'])
            .controller('selectController', selectController);
         function selectController ($scope) {
            $scope.users = [
               { id: 1, name: 'Mahesh' },
               { id: 2, name: 'Ramesh' },
               { id: 3, name: 'Sohan' }
            ];
            $scope.selectedUser = { id: 2, name: 'Ramesh' };
            $scope.drinks = [
               { category: 'hard', name: 'Beer' },
               { category: 'hard', name: 'Rum' },
               { category: 'hard', name: 'Vodka' },
               { category: 'hard', name: 'Whiski' },        
               { category: 'soft', name: 'Coke' },
               { category: 'soft', name: 'Pepsi' },
               { category: 'soft', name: 'Pulp Maid' },
               { category: 'soft', name: 'Real Juice' }
            ];
         }	  
      </script>      
   </head>
   <body ng-app = "firstApplication"> 
      <div id = "selectContainer" ng-controller = "selectController as ctrl"
         layout = "row" ng-cloak>
         <md-input-container>
            <label>User</label>
            <md-select ng-model = "selectedUser">
               <md-option ng-value = "user"
                  ng-repeat = "user in users">{{ user.name }}</md-option>
            </md-select>
         </md-input-container>
         <md-input-container>
            <label>Drinks</label>
            <md-select ng-model = "drink">
               <md-optgroup label = "Hard Drinks">
                  <md-option ng-value = "drink.name"
                     ng-repeat = "drink in drinks | filter: {category: 'hard' }">
                     {{drink.name}}</md-option>
               </md-optgroup>
               <md-optgroup label = "Soft Drinks">
                  <md-option ng-value = "drink.name"
                     ng-repeat = "drink in drinks | filter: {category: 'soft' }">
                     {{drink.name}}</md-option>
               </md-optgroup>
            </md-select>
         </md-input-container>
      </div>
   </body>
</html>