如何在javascript中使用map？

Question

const data = [
    {
        Team : "A",
        Member : "James",
        "Leads" : 305,
        closedLeads : 35
    },
    {
        Team : "C",
        Member : "Mike",
        "Leads" : 305,
        closedLeads : 35
    }
]

这是我的数据，我想根据他们的团队名称按照他们的领导的降序对他们进行排序。首先是团队名称，然后是团队内的所有成员。各成员应按其领导价值的上升顺序排列。

Answer 1

​

const data = [
    {
        Team: "A",
        Member: "James",
        "Leads": 305,
        closedLeads: 35
    },
    {
        Team: "C",
        Member: "Mike",
        "Leads": 305,
        closedLeads: 35
    },
    {
        Team: "C",
        Member: "Mike",
        "Leads": 302,
        closedLeads: 35
    }
];

data.sort((a, b) => (a.Team < b.Team) ? 1 : (a.Team === b.Team) ? ((a.Leads > b.Leads) ? 1 : -1) : -1 );

console.log(data);

​

Explanation:

您可以使用sort()方法的Array。它接受一个回调函数，该函数还接受两个对象作为数组中包含的参数(我们可以将它们称为a和b)：

data.sort((a, b) => (a.Team < b.Team) ? 1 : -1);

当它返回1时，该函数与sort()通信，即object b在排序时优先于object a。返回-1会做相反的事情。

回调函数也可以计算其他属性。在团队相同的情况下，您可以通过一个次要属性(此处为Leads)订购如下所示：

data.sort((a, b) => (a.Team < b.Team) ? 1 : (a.Team === b.Team) ? ((a.Leads > b.Leads) ? 1 : -1) : -1 );

在这里，我通过比较团队的Leads 值(如果它们有相同的名称)，按照升序排序。您可以检查Member 而不是 Team 。。

Answer 2

​

const data = [
    {
        Team : "A",
        Member : "James",
        "Leads" : 305,
        closedLeads : 35
    },
    {
        Team : "C",
        Member : "Mike",
        "Leads" : 305,
        closedLeads : 35
    }
]

const sorted = data
.sort((a, b) => a.Member.localeCompare(b.Meber))
.sort((a, b) => a.Team.localeCompare(b.Team))

console.log(sorted)

​