Question

function performerController($scope, $http) {
    this.getPerformerOnline = function (performerid) {
        setTimeout(this.getPerformerOnline, 3000, performerid);
        $http.get("ajax.php", {
            params:{
                "action":"getPerformerOnline", "performerid":performerid
            }
        }).success(function(data) {
            console.log(data);
            $scope.performer = data;
        });         
    };  
    this.getPerformerOnline(<?=$user->id?>);    
}

此功能仅限TWICE：console.log（data）;显示2次结果。

如何每3000ms调用一次getPerformerOnline？

Answer 1

您需要$interval而不是超时，同时避免在角度使用setTimeout，而是使用角度$timeout服务......

function performerController($scope, $http, $interval) {
    this.getPerformerOnline = function (performerid) {
        $interval(this.getPerformerOnline, 3000, performerid);
        $http.get("ajax.php", {
            params:{
                "action":"getPerformerOnline", "performerid":performerid
            }
        }).success(function(data) {
            console.log(data);
            $scope.performer = data;
        });         
    };  
    this.getPerformerOnline(<?=$user->id?>);    
}

Answer 2

不要在功能本身设置超时。而是定义您的功能，然后使用$interval服务重复调用它。

function performerController($scope, $http, $interval) {
  this.getPerformerOnline = function (performerid) {
    $http.get("ajax.php", {
      params:{
        "action":"getPerformerOnline", "performerid":performerid
      }
    }).success(function(data) {
      console.log(data);
      $scope.performer = data;
    });         
  };  
  $interval(this.getPerformerOnline, 3000, performerid);
}

Answer 3

您可以使用$ interval。使用$ interval服务的优点是，它在内部调用$ digest循环。

function MainController($scope, $interval) {
    $scope.intervalFunction = function(){
      //your code goes here 
    }
    var intervalPromise = $interval(function () { $scope.intervalFunction() }, 5000);  

    //best practice destroying the $interval on scope destroy
    $scope.$on('$destroy', function () { $interval.cancel(intervalPromise); });
}

希望这会对你有所帮助。

angularJS：如何使用setTimeout？

3 个答案: