Question

我是Javascript的新手，我有一个问题是访问数组数组中的项目。我正在使用AngularJs框架，这里是代码：

$scope.db.items4 = [];  
var newRow={
    ID:0,
    action1:[0,0,0,0,0,0,0],
    action2:[0,0,0,0,0,0,0]
    };

$scope.db.items4.push(newRow);

for (var j = 0; j < 50; j++){
   var lastRow=items4.length-1;
   var thatDay=ts.items[j].day;
   if(items4[lastRow].ID=="0"){
       items4[lastRow]=ts.items[j].ID;
       items4[lastRow].action1[thatDay]=ts.items[j].action1;
       items4[lastRow].action2[thatDay]=ts.items[j].action2;
   }else{
    if(items4[lastRow].ID==ts.items[j].ID && items4[lastRow].action2[thatDay]=="0") { 
       items4[lastRow].action1[thatDay]=ts.items[j].action1;
       items4[lastRow].action2[thatDay]=ts.items[j].action2;
        } else{
           var newRow2={
            ID:0,
            action1:[0,0,0,0,0,0,0],
            action2:[0,0,0,0,0,0,0]
            };
            $scope.db.items4.push(newRow2);
            lastRow++;
            items4[lastRow]=ts.items[j].ID;
            items4[lastRow].action1[thatDay]=ts.items[j].action1;
            items4[lastRow].action2[thatDay]=ts.items[j].action2;
            }
        }
   }

当我运行它时，javascript控制台总是说：

Uncaught ReferenceError: items4 is not defined

但很明显，item4已经定义了; （感谢任何帮助。

Answer 1

如果您想简化它，请将第一行更改为：

var item4 = $scope.db.items4 = [];

javascript：访问数组数组中的项

1 个答案: