如何在 angular 7 http 中迭代动态响应得到 api 调用

Question

我从 angular7 http get 方法得到动态响应，响应只是 object 的一个数组，它会每分钟动态变化，我需要捕获和迭代数组 ZA8CFDE6331BD59EB2AC96F8911C4B6 的新记录和现有记录

下面添加了数组 object 它会每分钟动态变化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"
      }
    }
  ]
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Answer 1

如果要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。

每当新数据出现时，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>