如果匹配 ID，则合并数组并为其添加标志

Posted 2023-03-13

【中文标题】如果匹配 ID，则合并数组并为其添加标志

【英文标题】：Combine arrays and add flag to it if matches the ID

【发布时间】：2022-01-15 10:14:09

【问题描述】：

我有两个结构相同的数组。

let TaskArray=[
  "TaskID:"171","TaskName":"task1","TaskGroup":"group","UserID":"3",
  "TaskID:"170","TaskName":"task2","TaskGroup":"group","UserID":"3",
  "TaskID:"169","TaskName":"task3","TaskGroup":"group","UserID":"3",
  "TaskID:"168","TaskName":"task4","TaskGroup":"group","UserID":"3",
  "TaskID:"167","TaskName":"task5","TaskGroup":"group","UserID":"3",
  "TaskID:"166","TaskName":"task6","TaskGroup":"group","UserID":"3",
  "TaskID:"165","TaskName":"task7","TaskGroup":"group","UserID":"3",
  "TaskID:"164","TaskName":"task8","TaskGroup":"group","UserID":"3",
  "TaskID:"163","TaskName":"task9","TaskGroup":"group","UserID":"3",
  "TaskID:"162","TaskName":"task10","TaskGroup":"group","UserID":"3"
]

let TaskDetailsArray = [
  "TaskID:"171","TaskName":"task1","TaskGroup":"group","UserID":"3",
  "TaskID:"170","TaskName":"task2","TaskGroup":"group","UserID":"3",
  "TaskID:"169","TaskName":"task3","TaskGroup":"group","UserID":"3",
  "TaskID:"168","TaskName":"task4","TaskGroup":"group","UserID":"3",
]

如果通过第一个数组中的 id 找到第二个数组中的项，我需要比较两个数组并将标志 isAssigned 设置为 true，否则设置为 false。

matcheArray = [
  "TaskID:"171","TaskName":"task1","TaskGroup":"group","UserID":"3",isAssigned: true,
  "TaskID:"170","TaskName":"task2","TaskGroup":"group","UserID":"3",isAssigned: true,
  "TaskID:"169","TaskName":"task3","TaskGroup":"group","UserID":"3",isAssigned: true,
  "TaskID:"168","TaskName":"task4","TaskGroup":"group","UserID":"3",isAssigned: true,
  "TaskID:"167","TaskName":"task5","TaskGroup":"group","UserID":"3",
  "TaskID:"166","TaskName":"task6","TaskGroup":"group","UserID":"3",
  "TaskID:"165","TaskName":"task7","TaskGroup":"group","UserID":"3",
  "TaskID:"164","TaskName":"task8","TaskGroup":"group","UserID":"3",
  "TaskID:"163","TaskName":"task9","TaskGroup":"group","UserID":"3",
  "TaskID:"162","TaskName":"task10","TaskGroup":"group","UserID":"3"
]

下面的代码工作正常，但我不确定是否有更好的方法来完成它。请提出建议。

   for (var i = 0; i < TaskArray.length; i++) 
                        for (var k = 0; k < this.TaskDetailsArray.length; k++) 
                            if (TaskArray[i].TaskID == this.TaskDetailsArray[k].TaskID) 
                               
                                if (!this.TaskDetailsArray[k].isAssigned) 
                                    this.TaskDetailsArray[k].isAssigned = true;
                                ;
                            
                        

【问题讨论】：

sn-p 不仅仅是一个更好的代码块。仅在可以执行其内容并为问题添加某些内容（例如产生您正在谈论的错误）的情况下才使用 sn-p。

请修复损坏的语法（通过损坏的语法突出显示可见）

【参考方案1】：

const comparedArray = taskArray.map(item => 
   return 
...item,
isAssigned: TaskDetailsArray.some(secondItem => secondItem.TaskId === item.TaskId );
  
)