Question

我需要在ng-repeat完成时发送回调，但我的解决方案不起作用。在我的上一个解决方案中，我使用了一个指令来完成它

标记：

<div class="results" ng-model="results">
    <div class="empl-card" ng-repeat="empl in employees | filter: searchQuery" callback-on-end="alert('callback')">
    ...
    </div>
</div>

指令：

app.directive("callbackOnEnd", function() {
    return {
        restrict: "A",
        link: function(scope, element, attrs) {
            if (scope.$last) {
                scope.$eval(attrs.callbackOnEnd);
            }
        }
    };
});

我在哪里犯了错误？

Answer 1

我认为你可以用ngInit做到这一点，如下所示;

<div class="results" ng-model="results">
  <div class="empl-card" ng-repeat="empl in employees | filter: searchQuery" ng-init="$last && alert('callback')">
    ...
  </div>
</div>

执行此操作不需要自定义指令。

Answer 2

要实现这一点，您需要在控制器中创建一个方法，并在ng-repeat结束时调用该方法：

＆＃13;

(function() {

  angular.element(document).ready(function() {
    var app = angular.module('myApp', []);

    app.controller("MyCtrl", function($scope, $timeout) {

      $scope.names = ['A', 'B', 'C', 'D'];

      $scope.onEnd = function() {
        alert('all done');
      };

    });

    app.directive("callbackOnEnd", function() {
      return {
        restrict: "A",
        link: function(scope, element, attrs) {
          if (scope.$last) {
            scope.$eval(attrs.callbackOnEnd);
          }
        }
      };
    });

    angular.bootstrap(document, ['myApp']);
  });


}());

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-controller="MyCtrl" class="well">
  <h3 ng-repeat="name in names" callback-on-end="onEnd()">{{name}}</h3>
</div>

＆＃13;

或者你必须eval javascript代码

app.directive("callbackOnEnd", function() {
    return {
        restrict: "A",
        link: function(scope, element, attrs) {
            if (scope.$last) {
                eval(attrs.callbackOnEnd);
            }
        }
    };
});

＆＃13;

(function() {

  angular.element(document).ready(function() {
    var app = angular.module('myApp', []);

    app.controller("MyCtrl", function($scope, $timeout) {

      $scope.names = ['A', 'B', 'C', 'D'];

      $scope.onEnd = function() {
        alert('all done');
      };

    });

    app.directive("callbackOnEnd", function() {
      return {
        restrict: "A",
        link: function(scope, element, attrs) {
          if (scope.$last) {
            eval(attrs.callbackOnEnd);
          }
        }
      };
    });

    angular.bootstrap(document, ['myApp']);
  });


}());

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-controller="MyCtrl" class="well">
  <h3 ng-repeat="name in names" callback-on-end="alert('done')">{{name}}</h3>
</div>

＆＃13;

在这里找到好的解释： https://stackoverflow.com/a/15671573/3603806

Answer 3

点击这里。为repeatEnd创建自定义指令 http://plnkr.co/edit/YhGzYFOcVaVds7iAEWPn?p=preview

<h3 ng-repeat="name in names" repeat-end="onEnd()">{{name}}</h3>

app.js

angular.element(document).ready(function() {
    var app = angular.module('repApp', []);

    app.controller("MainCtrl", function($scope, $timeout) {

        $scope.names = ['user1', 'user2', 'user3'];

        $scope.onEnd = function() {
            $timeout(function() {
                alert('all done');
            }, 1);
        };

    });

    app.directive("repeatEnd", function() {
        return {
            restrict: "A",
            link: function(scope, element, attrs) {
                if (scope.$last) {
                    scope.$eval(attrs.repeatEnd);
                }
            }
        };
    });

    angular.bootstrap(document, ['repApp']);
});

Angular.js ng-repeat回调

3 个答案: