Question

我有这个数组$scope.taxarr，我正面临一些值，如下所述。

$scope.taxarr = [];
for (var co = 0; co < count_item; co++) {

  $scope.qty_amt = parseInt($scope.newData1[co].quantity) * parseInt($scope.newData1[co].rate);

  $scope.tax_val1 = (parseInt($scope.qty_amt) * parseInt($scope.newData1[co].tax_value)) / 100;


  $scope.taxvalue = parseInt($scope.newData1[co].tax_value);
  $scope.taxid = parseInt($scope.newData1[co].tax_name);
  $scope.loop = $scope.taxarr.length;
  if ($scope.loop === 0) {
    $scope.taxarr.push({
      tax_id: $scope.taxid,
      tax_name: $scope.taxvalue,
      tax_amount: $scope.tax_val1
    });
  } else {
    for (var i = 0; i < $scope.loop; i++) {

      if ($scope.taxid === $scope.taxarr[i].tax_id) {
        $scope.taxarr[i].tax_amount = parseInt($scope.taxarr[i].tax_amount) + parseInt($scope.tax_val1);
        break;
      } else {

        $scope.taxarr.push({
          tax_id: $scope.taxid,
          tax_name: $scope.taxvalue,
          tax_amount: $scope.tax_val1
        });
      }
    }
  }
  console.log($scope.taxarr);
}

我有一个数组允许我检查数组对象中的特定id，我在内部if ... else部分面临一些问题，我检查我的id是否匹配值是更新数量，否则推送对象作为新记录

我正在使用循环，每次循环都提供不同的数组值，并在if条件下进行比较。

我需要一些方法来帮助我直接在数组对象中找到值并返回True / False，我可以在哪里执行我的操作

Answer 1

为什么重新发明轮子？

$scope.$watch(function(){
    return $scope.taxarr;
}, function taxarr_change(newValue, oldValue){
    //do your thing!

}, true)//true is not a must, read in docs

Answer 2

    $scope.taxarr = [];
    $checkPresent = 0;
    for (var co = 0; co < count_item; co++) {

$scope.qty_amt = parseInt($scope.newData1[co].quantity) * parseInt($scope.newData1[co].rate);
    $scope.tax_val1 = (parseInt($scope.qty_amt) * parseInt($scope.newData1[co].tax_value)) / 100;
    $scope.taxvalue = parseInt($scope.newData1[co].tax_value);
$scope.taxid = parseInt($scope.newData1[co].tax_name);
$scope.loop = $scope.taxarr.length;
if ($scope.loop === 0) {
    $scope.taxarr.push({
    tax_id: $scope.taxid,
    tax_name: $scope.taxvalue,
    tax_amount: $scope.tax_val1
            });
} else {
    for (var i = 0; i < $scope.loop; i++) {
        if ($scope.taxid === $scope.taxarr[i].tax_id) {
        $checkPresent = 1;                       
                    break;
                    } 
             }
    if($checkPresent === 1){
         $scope.taxarr[i].tax_amount = parseInt($scope.taxarr[i].tax_amount) + parseInt($scope.tax_val1);
    }else {
       $scope.taxarr.push({
                    tax_id: $scope.taxid,
                    tax_name: $scope.taxvalue,
                    tax_amount: $scope.tax_val1
               });
            }
     $checkPresent = 0;

      }
      console.log($scope.taxarr);
    }

管理我的数组值

2 个答案: