如何从密钥中获取值

Question

export class Installment {
    constructor(
        public isResurring: boolean,
        public isInstallment: boolean,
        public price: string,
        public sku: string
    ) { }
this.keys = Object.keys(this.paymentPlans);
   for(let key of this.keys){
        if(key == "A"){
            // how to get value and assign that value to above object
        }
}

我在数组中获得键A，b

在Angular 2中如何基于提供的键(A或B(获得值...这里值是对象如何将其解析为Angular 2

中的模型

for(let key of this.keys){
        if(key == "A"){
            // how to get value and assign that value to object}}`

这是我的JSON对象

export class Installment {
    constructor(
        public isResurring: boolean,
        public isInstallment: boolean,
        public price: string,
        public sku: string
    ) { }

//json对象

{"A":{"isInstallment":true,"isRecurring":true,"price":"4.0","sku":"abc"},
"B":{"isInstallment":false,"isRecurring":true,"price":"1.0","sku":"def"}}

Answer 1

，但您可以使用Angular foreach做

var k = 'A'
angular.forEach(data, function(value, key){
 if (k == key) {
   doSomething()
 }
})

Answer 2

这与Angular无关，这与JavaScript有关。

const keys = ['A'];
const obj1 = {
  A: 'Some value',
  B: 'Some other value'
};
const obj2 = {};
for (let key of keys)
  obj2[key] = obj1[key]; // <---- This is the way to access an object property with a string
console.log(obj2); // {"A": "Some value"}

此代码将将OBJ1的属性分配给OBJ2的属性。