Question

我有两个数组：

UserGroupUser[{Id:"1",UserId:"2",UserGroupId"1"},
           {Id:"2",UserId:"3",UserGroupId"1"},
            {Id:"3",UserId:"4",UserGroupId"2"}]

UserGroupId 将包含诸如1,2,3之类的值。

Employee[{EmployeeId:"1", EmpName:"John", Email:"john@example.com"},
       {EmployeeId:"2", EmpName:"Mary", Email:"Mary@example.com"},
         {EmployeeId:"3", EmpName:"Sarah", Email:"Sarah@example.com"},
         {EmployeeId:"4", EmpName:"Jake", Email:"Jake@example.com"}   ]

我会将数字存储在变量 GroupId 中，例如GroupId = 1 我想要做的是检查 UserGroupUser 表，如果GroupId 1匹配关键UserGroupId的任何行，并且如果每个UserId都匹配，则Employee表中相应的EmployeeId匹配将意味着我添加一个新的名为 enrolled = true的元素。如果不匹配，则为Employee添加元素 enrolled = false 。

例如：

如果GroupId = 1，那么我想在UserGroupUser数组中获取UserGroupId为1的userId，并将Employrol数组EmployeeId中的注册：true添加到UserId对应的那些。

这就是我试图这样做的方式..

 UserGroupUser.forEach(function (arrayItem) {
                    if (arrayItem.UserGroupId === GroupId) {
                        result = Employee.map(function (a, index, array) {
                            while (arrayItem.UserId === a.EmployeeNo) {

                                a.enrolled = true;
                            }

                            return a;
                        }
                        );
                    }
                    else {
                        result = Employee.map(function (a, index, array) {
                            a.enrolled = false;
                            return a;
                        }
                        );

                    }
                });

我在做错了什么？我该怎么做？

Answer 1

试试这个

var userGroup = [{Id:"1",UserId:"2",UserGroupId:"1"},
           {Id:"2",UserId:"3",UserGroupId:"1"},
            {Id:"3",UserId:"4",UserGroupId:"2"}]

var employees = [{EmployeeId:"1", EmpName:"John", Email:"john@example.com"},
       {EmployeeId:"2", EmpName:"Mary", Email:"Mary@example.com"},
         {EmployeeId:"3", EmpName:"Sarah", Email:"Sarah@example.com"},
         {EmployeeId:"4", EmpName:"Jake", Email:"Jake@example.com"}   ]

employees.forEach(function(item){
        var found = userGroup.filter(i=>i.UserId==item.Id);
        if(found.length>0)
            item.enrolled = true
        else
            item.enrolled = false
})

console.log(employees);

员工随后将包含已注册或未在您的控制台中尝试此操作

Answer 2

您的代码存在的问题是，执行if (arrayItem.UserGroupId === GroupId) {时，相关员工会将enrolled更改为true，但执行此检查的else部分时，它会覆盖if条件部分所做的更改。试试这个。

UserGroupUser = [{Id:"1",UserId:"2",UserGroupId:"1"},
             {Id:"2",UserId:"3",UserGroupId:"1"},
             {Id:"3",UserId:"4",UserGroupId:"2"}];
Employee = [{EmployeeId:"1", EmpName:"John", Email:"john@example.com"},
        {EmployeeId:"2", EmpName:"Mary", Email:"Mary@example.com"},
        {EmployeeId:"3", EmpName:"Sarah", Email:"Sarah@example.com"},
        {EmployeeId:"4", EmpName:"Jake", Email:"Jake@example.com"}];
GroupId = "1";
Employee.map(function (emp) {
  emp.enrolled = false;
});
UserGroupUser.forEach(function (arrayItem) {
  if (arrayItem.UserGroupId === GroupId) {
    Employee.map(function (emp) {
      if (arrayItem.UserId === emp.EmployeeId) {
        emp.enrolled = true;
      }
    });
  }
});
console.log(Employee);

检查另一个数组后如何向数组添加值

2 个答案: