JavaScript中是否有任何键/值对结构？

Question

我想存储以下信息:

伪代码

array(manager) = {"Prateek","Rudresh","Prashant"};
array(employee) = {"namit","amit","sushil"};
array(hr) = {"priya","seema","nakul"};

我可以使用哪种数据结构？

Answer 1

您可以使用数组来存储数据列表; 和键值的对象

在你的情况下,你可能会同时使用两者:

var data = {
    'manager': ["Prateek","Rudresh","Prashant"], 
    'employee': ["namit","amit","sushil"], 
    'hr': ["priya","seema","nakul"]
};

在这里,data是一个对象; 其中包含三个数组.

Answer 2

一个东西:

var myobj = {
  "manager": ["Prateek","Rudresh","Prashant"],
  "employee": ["namit","amit","sushil"],
  "hr": ["priya","seema","nakul"]
}

alert(myobj['employee'][1]); // Outputs "amit"

Answer 3

普通对象会:

var a = {
    key1: "value1",
    key2: ["value2.1","value2.2"]
    /*etc*/
}

访问:

a.key1
a["key1"]

Answer 4

你可以将它们存储在一个对象数组中:

    var Staff = [
       { name: 'Prateek', role: manager },
       { name: 'Rudresh', role: manager },
       { name: 'Prashant', role: manager },
       { name: 'Namit', role: employee },
       { name: 'Amit', role: employee },
       { name: 'Sushil', role: employee },
       { name: 'Priya', role: hr },
       { name: 'Seema', role: hr },
       { name: 'Nakul', role: hr },
    ];

添加ID属性也可能有用,具体取决于您的应用程序.即

    { id: 223, name: 'Prateek', role: manager },

Answer 5

在 ES2015/ES6 中，你有Map类型。

使用 Map 你的代码看起来像

const map = new Map([
  ['manager', ['Prateek', 'Rudresh', 'Prashant']],
  ['employee', ['namit', 'amit', 'sushil']],
  ['hr', ['priya', 'seema', 'nakul']]
])

console.log(...map.entries())

要获取个人值，您可以使用Map.get('key')方法