动态向JSON对象添加变量名-值对

那不是JSON。它只是Javascript对象,与JSON毫无关系。

可以使用方括号动态设置属性。例子:

var obj = {};
obj['name'] = value;
obj['anotherName'] = anotherValue;

var obj = { name : value, anotherName : anotherValue };

如果已将对象添加到 ips 集合中,使用一对方括号访问集合中的对象,使用另一对方括号访问对象中的属性:

ips[ipId] = {};
ips[ipId]['name'] = value;
ips[ipId]['anotherName'] = anotherValue;

ips[ipId] 而不是 obj .

ips[ipId] = {};
var obj = ips[ipId];
obj['name'] = value;
obj['anotherName'] = anotherValue;

可以使用字符串变量指定属性的名称:

var name = 'name';
obj[name] = value;
name = 'anotherName';
obj[name] = anotherValue;

它是标识属性的变量(字符串)的值,因此在使用 obj[name] 对于上面代码中的两个属性,决定要访问哪个属性的是访问变量时变量中的字符串。

你可以用 computed property names 在对象属性定义中,例如:

var name1 = 'John'; 
var value1 = '42'; 
var name2 = 'Sarah'; 
var value2 = '35';

var ipID = { 
             [name1] : value1, 
             [name2] : value2 
           }

var ipID = { 
             John: '42', 
             Sarah: '35' 
           }

当使用javascript对象时,也可以使用“点符号”来添加一个项( which JSLint prefers )

var myArray = { name : "john" };
//will initiate a key-value array with one item "name" and the value "john"
myArray.lastName = "smith";
//will add a key named lastName with the value "smith"
//Object {name: "john", lastName: "smith"}

这是Chrome控制台测试的截图

var ips = {}

function addIpId(ipID, name, value) {
    if (!ips[ipID]) ip[ipID] = {};
    var entries = ip[ipID];
    // you could add a check to ensure the name-value par's not already defined here
    var entries[name] = value;
}

在Javascript中。

    var myObject = { "name" : "john" };
    // { "name" : "john" };
    myObject.gender = "male";
    // { "name" : "john", "gender":"male"};

根据其他答案的建议,我认为这可能有助于:

var object = ips[ipId];
var name = "Joe";
var anothername = "Fred";
var value = "Thingy";
var anothervalue = "Fingy";
object[name] = value;
object[anothername] = anothervalue;

object["string"] = value;
//object = {string: value}

如果我对初始JSON的理解是正确的,那么这些解决方案中的任何一个都可以帮助您遍历所有ip id,并为每个ip id分配一个新对象。

// initial JSON
var ips = {ipId1: {}, ipId2: {}};

// Solution1
Object.keys(ips).forEach(function(key) {
  ips[key] = {name: 'value', anotherName: 'another value'};
});

// Solution 2
Object.keys(ips).forEach(function(key) {
  Object.assign(ips[key],{name: 'value', anotherName: 'another value'});
});

确认:

console.log(JSON.stringify(ips, null, 2));

上面的说法是:

{
  "ipId1": {
    "name":"value",
    "anotherName":"another value"
  },
  "ipId2": {
    "name":"value",
    "anotherName":"another value"
  }
}

矿脉 _.assign

var ipID = {};
_.assign(ipID, {'name': "value"}, {'anotherName': "anotherValue"});
console.log(ipID);

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