angular里的filter过滤数据传参问题

Question

控制器:$scope.dataList=[

{"dataClass":"0","dataName":"A1"},
{"dataClass":"0","dataName":"A2"},
{"dataClass":"1","dataName":"B1"},
{"dataClass":"1","dataName":"B2"},
{"dataClass":"2","dataName":"C1"},
{"dataClass":"2","dataName":"C2"}

]
HTML模板:
<li ng-repeat="item in dataList |filter :{'dataClass'：'0'}">{{item.dataName}}</li>
页面展示将循环过滤出dataList数组中dataClass为'0'的A1,A2;现在的需求是dataClass过滤的值是一个变量设为varity，而ng-repeat="item in dataList |filter :{'dataClass'：varity}"，又不生效，请问如何实现该需求

Answer 1

帮你写了个过滤器，把指定的dataClass去掉了：

angular.module('common', []).filter('myFilter', function () {
        return function (collection, keyname,value) {
            var output = [];
            angular.forEach(collection, function (item) {
                //过滤数组中值与指定值相同的元素
                if(item[keyname]!=value){
                    output.push(item);
                }
            });
            return output;
        }
    });

---

<div ng-app="myApp" ng-controller="myCtrl">
    <p ng-repeat="x in items | myFilter: 'dataClass': dcValue ">
        {{x.dataClass}}---{{x.dataName}}
    </p>
</div>

过滤器接收3个参数，原数组，要过滤的key，以及指定的key值。

Answer 2

repeat="item in dataList |filter :{'dataClass'：{{varity}} }"

加花括号就可以了