angularjs – 如何使用Angular JS将值推送到数组中检查uniquness

发布时间：2020-12-17 07:39:39 所属栏目：安全来源：网络整理

导读：$scope.displayyears = []; $scope.Joinyear = function(display) { $scope.yeardisplay = display; $scope.yeardisp = $scope.displayyears.push($scope.yeardisplay); $scope.displayyearss = uniq($scope.yeardisp) } 它会抛出错误,如“uniq is undefined

$scope.displayyears = [];
  $scope.Joinyear = function(display) {
    $scope.yeardisplay = display;       
    $scope.yeardisp = $scope.displayyears.push($scope.yeardisplay);
    $scope.displayyearss = uniq($scope.yeardisp)
  }

它会抛出错误,如“uniq is undefined”..我们如何检查唯一性？

在添加之前,请尝试检查yeardisplay是否已经在阵列中

$scope.displayyears = [];
$scope.Joinyear=function(display){
     $scope.yeardisplay=display;        
     if ($scope.displayyears.indexOf(display) == -1) {
         $scope.displayyears.push(display);
     }
}

（编辑：李大同）

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