javascript 我可以将参数传递给使用 _.lodash 去抖动的函数吗？

Can I pass parameters to a function debounced with _.lodash?

提问by

I have been trying to use _lodash.debounce() and i have it working. However i am not sure if it's working the best way it could be. I looked at the example on the lodash web site and they seem to be just simple examples that don't pass around parameters. Here's what i have:

我一直在尝试使用 _lodash.debounce() 并且我让它工作了。但是我不确定它是否以最好的方式工作。我查看了 lodash 网站上的示例，它们似乎只是不传递参数的简单示例。这是我所拥有的：

$scope.parsePid = _.debounce(function () {
    $scope.$apply(function () {
        var pid = $scope.option.sPidRange;
        if (pid == null || pid === "") {
            $scope.pidLower = null;
            $scope.pidUpper = null;
        }
        else if (pid.indexOf("-") > 0) {
            pid = pid.split("-");
            $scope.pidLower = parseInt(pid[0]);
            $scope.pidUpper = parseInt(pid[1]);
        }
        else {
            $scope.pidLower = parseInt(pid);
            $scope.pidUpper = null;
        }
    });
}, 1500);

The above code returns a function $scope.parsePidthat's debounced. Notice that on the 4th line i get the value of $scope.option.SPidRangeand use that in the function. I really want to somehow pass in this parameter rather than get it this way.

上面的代码返回一个$scope.parsePid去抖动的函数。请注意，在第 4 行，我获取了 的值$scope.option.SPidRange并在函数中使用了它。我真的很想以某种方式传递这个参数而不是这样得到它。

I call the function like this:

我这样调用函数：

$scope.$watch("option.sPidRange", function (pid) {
    if (pid !== null) {
        $scope.parsePid();
    }
});

Here the value pid should be equal to $scope.parsePid

这里的值 pid 应该等于 $scope.parsePid

I would like to pass this value of pid into the debounced function but i am not sure how to do this. I tried a few different things but the debounce function gives an error.

我想将此 pid 值传递到去抖动函数中，但我不确定如何执行此操作。我尝试了一些不同的东西，但 debounce 函数给出了一个错误。

Is it possible to pass parameters into the debounced function $scope.parsePid()?

是否可以将参数传递到 debounced 中function $scope.parsePid()？

采纳答案by Ilan Frumer

UPDATE

更新

You should pass an argument into the function: _.debounce(function (pid) {

您应该将参数传递给函数： _.debounce(function (pid) {

An example with debounce

去抖动的例子

$scope.parsePid = _.debounce(function(pid){
  $scope.$apply(function(){
    if (pid === null || pid === "") {
      $scope.pidLower = null;
      $scope.pidUpper = null;
    } else if (pid.indexOf("-") > 0) {
      pid = pid.split("-");
      $scope.pidLower = parseInt(pid[0],10);
      $scope.pidUpper = parseInt(pid[1],10);      
    } else {
      $scope.pidLower = parseInt(pid,10);
      $scope.pidUpper = null;
    }      
  });
},1500);

I would use the built-in $timeout

我会使用内置的 $timeout

An example with $timeout

$timeout 的例子

var promise;

$scope.parsePid = function(pid){
  $timeout.cancel(promise);
  promise = $timeout(function(){     
    if (pid === null || pid === "") {
      $scope.pidLower = null;
      $scope.pidUpper = null;
    } else if (pid.indexOf("-") > 0) {
      pid = pid.split("-");
      $scope.pidLower = parseInt(pid[0],10);
      $scope.pidUpper = parseInt(pid[1],10);      
    } else {
      $scope.pidLower = parseInt(pid,10);
      $scope.pidUpper = null;
    }
  },1500);
};