ng-Repeat =“（key，val）”不适用于Angular中的表格
[英]ng-Repeat=“(key,val)” not working for table in Angular
问题描述
i am working on a MEAN stack application. 
我正在开发MEAN堆栈应用程序。 I am fetching values from database, creating a Map using $scope.varMap = new Map(); 我正在从数据库中获取值，使用$scope.varMap = new Map();创建一个Map $scope.varMap = new Map(); in my controller and trying to show the key,value of varMap in my angular UI using following code: 在我的控制器中，并尝试使用以下代码在我的角度UI中显示varMap的键值：
This is how I am setting value in controller: 这就是我在控制器中设置值的方式：
$scope.varMap.set($scope.mappings.name,$scope.mappings.shortname);
and this is code snippet from angular: 这是角度的代码片段：
<table class="table table-bordered table-list">
<thead>
<tr>
<th>KEY</th>
<th>VALUE</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="(key,val) in varMap">
<td>{{key}}</td>
<td>{{val}}</td>
</tr>
</tbody>
</table>
but unfortunately the ng-repeat is not showing anything. 但是很遗憾， ng-repeat没有显示任何内容。 I tried printing the map values in console in my controller and its printing proper values. 我尝试在控制器的控制台中打印地图值，并打印适当的值。
for (var [key, value] of $scope.varMap) {
console.log(key + ' = ' + value);
}
I tried the links & answers available on stackoverflow but no success. 我尝试了stackoverflow上可用的链接和答案，但没有成功。 Please help. 请帮忙。
1 个解决方案
解决方案1
3 已采纳 2018-01-22 14:43:03
Since ng-repeat not support Map iteration, you could use a custom filter fromMap like below : 由于ng-repeat不支持Map迭代，因此您可以使用来自map的自定义过滤器，如下所示：
app.filter('fromMap', function() {
return function(input) {
var out = {};
input.forEach((v, k) => out[k] = v);
return out;
}
});
and your controler : 和您的控制者：
app.controller('MainCtrl', function($scope) {
$scope.data = new Map();
$scope.data.set("prop1","as");
$scope.data.set("prop2","ssas");
});
and your HTML: 和您的HTML：
<body ng-controller="MainCtrl">
<table>
<tr ng-repeat="(key, val) in data | fromMap"><td>{{key}}</td><td>{{val}}</td></tr>
</table>
</body>
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