<pre><code class="lang-html"><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>
</code></pre>
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