[Angularjs]angular ng-repeat与js特效加载先后导致的问题

var app = angular.module(‘mylibraryapp‘, [‘ngRoute‘, ‘pascalprecht.translate‘, ‘ngFileUpload‘]);

//指令
app.directive(‘onFinishRenderFilters‘, function ($timeout) {
    return {
        restrict: ‘A‘,
        link: function (scope, element, attr) {
            if (scope.$last === true) {
                $timeout(function () {
                    scope.$emit(‘ngRepeatFinished‘);
                });
            }
        }
    }
});

<div class="item" id="filediv" ng-repeat="file in files" on-finish-render-filters>
           ........
</div>

    //加载完成
    $scope.$on(‘ngRepeatFinished‘, function (ngRepeatFinishedEvent) {
        new WOW().init();
        var h = $(window).height();
        $(".modal-dialog").css("margin-top", (h / 2) - 100 + "px");
    });