Angular get json array inside another array

Question

I have following JSON struncture:

{
  "daypart": [
    {
      "dayOrNight": [
        null,
        "N",
        "D",
        "N",
        "D",
        "N",
        "D",
        "N",
        "D",
        "N",
        "D",
        "N"
      ]
    }
  ]
}

What i want to do is reach keys array inside narrative . But whenever I try to get those keys l get forecast undefined or forecast [object Object]

Code

 async forcast(){
    this.http.get("xxxxxxxxxxxxxxx")

    .subscribe(data => {

      let f = data
      this.dforecast = f["daypart"]["narrative"]


      console.log("forecast "+ this.dforecast )


    })
  }

Where is "narrative" coming from? isn't it "dayOrNight"?

Albondi
– Albondi

2019-08-09 21:12:44 +00:00
Commented Aug 9, 2019 at 21:12 — Albondi
– Albondi, Commented Aug 9, 2019 at 21:12
sorry l updated

Ali Ghassan
– Ali Ghassan

2019-08-09 21:16:20 +00:00
Commented Aug 9, 2019 at 21:16 — Ali Ghassan
– Ali Ghassan, Commented Aug 9, 2019 at 21:16

wentjun · Accepted Answer · 2019-08-09 21:18:02Z

3

f['daypart'] is an array. Thefore, you will need to reference it by its index.

this.dforecast = f['daypart'][0]['narrative'];

In addition, there is no need to declare forcast() as an async method, as we are dealing with observables, rather than Promise-based responses.

forcast() {
 // rest of your cose 
}

edited Aug 9, 2019 at 21:18

answered Aug 9, 2019 at 21:12

wentjun

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Comments

Albondi · Accepted Answer · 2019-08-09 21:11:50Z

2

You should try with:

this.dforecast = f["daypart"][0]["dayOrNight"]

Since it is an array.

answered Aug 9, 2019 at 21:11

Albondi

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