我正在为将来的项目评估angularjs。我需要做的一件事情是通过选择适当的“页面” radio 输入来显示“ channel ”信息的不同页面。此外,还可以从一组“页面集” radio 输入中选择页面按钮的范围。
下面的工作示例具有一组32个通道,通过“设置”和“页面” radio 输入的组合选择了可见的通道组,总共提供2 * 4页,每个通道4个通道。
<!doctype html>
<html ng-app>
<head>
<script type="text/javascript" src="angular.js"></script>
<script type="text/javascript">
function Channels($scope) {
$scope.groupSize = 4;
$scope.pageSet = 0;
$scope.pageNumber = 0;
$scope.channels = [
{"id": "Ch-001"}, {"id": "Ch-002"}, {"id": "Ch-003"}, {"id": "Ch-004"},
{"id": "Ch-005"}, {"id": "Ch-006"}, {"id": "Ch-007"}, {"id": "Ch-008"},
{"id": "Ch-009"}, {"id": "Ch-010"}, {"id": "Ch-011"}, {"id": "Ch-012"},
{"id": "Ch-013"}, {"id": "Ch-014"}, {"id": "Ch-015"}, {"id": "Ch-016"},
{"id": "Ch-017"}, {"id": "Ch-018"}, {"id": "Ch-019"}, {"id": "Ch-020"},
{"id": "Ch-021"}, {"id": "Ch-022"}, {"id": "Ch-023"}, {"id": "Ch-024"},
{"id": "Ch-025"}, {"id": "Ch-026"}, {"id": "Ch-027"}, {"id": "Ch-028"},
{"id": "Ch-029"}, {"id": "Ch-030"}, {"id": "Ch-031"}, {"id": "Ch-032"}
];
}
</script>
</head>
<body ng-controller="Channels">
<p>Set:
<input type="radio" name="pageSet" ng-model="pageSet" ng-value="0">1-4</input>
<input type="radio" name="pageSet" ng-model="pageSet" ng-value="1">5-8</input>
</p>
<p>Page:
<input type="radio" name="pageNumber" ng-model="pageNumber" ng-value="0">{{pageSet * groupSize + 1}}</input>
<input type="radio" name="pageNumber" ng-model="pageNumber" ng-value="1">{{pageSet * groupSize + 2}}</input>
<input type="radio" name="pageNumber" ng-model="pageNumber" ng-value="2">{{pageSet * groupSize + 3}}</input>
<input type="radio" name="pageNumber" ng-model="pageNumber" ng-value="3">{{pageSet * groupSize + 4}}</input>
</p>
<ul>
<li ng-repeat="channel in channels | limitTo: groupSize * ((groupSize * pageSet) + pageNumber + 1) | limitTo: -groupSize">
<p>{{channel.id}}</p>
</li>
</ul>
</body>
</html>
我的问题是如何使用
ng-repeat
创建页面/页面集单选输入。我尝试了以下方法:<p>Set: <input ng-repeat="n in [0,1]" type="radio" name="pageSet" ng-model="pageSet" ng-value="{{n}}"></p>
<p>Page: <input ng-repeat="n in [0,1,2,3]" type="radio" name="pageNumber" ng-model="pageNumber" ng-value="{{n}}"></p>
看起来正确,但值未绑定(bind)到相应的pageSet / pageNumber变量。谁能告诉我我在这里想念的东西吗?
最佳答案
ng-repeat创建一个子作用域,因此您必须绑定(bind)到$ parent:
这是一个小提琴:http://jsfiddle.net/g/r9MLe/2/
样品:
<p>Set:
<label ng-repeat="n in [0,1]">
<input type="radio" name="pageSet" ng-model="$parent.pageSet" ng-value="n" />{{n}}
</label>
</p>
<p>Page:
<label ng-repeat="n in [0,1,2,3]">
<input type="radio" name="pageNumber" ng-model="$parent.pageNumber" ng-value="n" /> {{n}}
</label>
</p>