javascript - 如何在 Angular 7 http get api 调用中迭代动态响应

Question

我从 angular7 http get 方法获得动态响应，该响应只是一个对象数组，它每分钟都会动态变化，我需要捕获和迭代数组对象的新记录和现有记录，任何人都可以指导我如何解决这个问题

下面添加的数组对象它将每分钟动态更改，我如何迭代新的和现有的记录

------------------------------------------------------------
[
    {
      "2018": {
        "score": "0.03726378083229065",
        "TxnNo": "2293760_1-2019r",
        "month_interest_std": "23.632556357702818",
        "m4_last_payment_amount": "1031.94",
        "firstInstalmentDate": "2/28/2018",
        "m6_balance": "15044.57",
        "m2_m1_balance": "0.06796083071380637",
        "period_max": "24.0",
        "paymentmethod_nan": "0"
      }
    }
  ]
-------------------------------------------------------------------

Answer 1

如果您想保留数组中的新数据和现有数据，最好将其存储在局部变量中的某个位置并对其进行迭代。

每当新数据到来时，将新数据推送到现有数组中，如下所示 -

fullData: Array<any> = [];

this.fullData.push({
      "2018": {
        "score": "0.03726378083229065",
        "TxnNo": "2293760_1-2019r",
        "month_interest_std": "23.632556357702818",
        "m4_last_payment_amount": "1031.94",
        "firstInstalmentDate": "2/28/2018",
        "m6_balance": "15044.57",
        "m2_m1_balance": "0.06796083071380637",
        "period_max": "24.0",
        "paymentmethod_nan": "0"
      })

<div *ngFor='let item of fullData'>{{item?.TxnNo}}</div>