基本选择 ng-model angularjs

Question

我想用选择做一个非常简单的ng-model并将数据保存到ticket.category，但我在<p>内没有任何输出

选项显示在所选内容上，但所选选项不会显示在段落中

我做错了什么？

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.5/angular.min.js"></script>
<select id="category-select" name="category">
<option ng-repeat="category in categories" 
value="{{category.TICKET_CATEGORY_DESCRIPTION}}" 
ng-model="ticket.category" required>
{{category.TICKET_CATEGORY_DESCRIPTION}}
</option>
</select>
<p>Hi {{ticket.category}}</p>

Answer 1

你应该把ng-model select元素

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.5/angular.min.js"></script>
<select id="category-select" name="category" ng-model="category">
<option ng-repeat="category in categories" value="{{category.TICKET_CATEGORY_DESCRIPTION}}" required ng-selected="$index=0">
{{category.TICKET_CATEGORY_DESCRIPTION}}
</option>
</select>
<p>Hi {{ticket.category}}</p>