CODEWITHSUNDEEP
javascriptjson
D. Hoffman
D. Hoffman

Reputation: 45

Count Number of Instances in JSON File

I am working on some JSON parsing code, and I wanted to check if there are multiple "Addresses" blocks. In my example below there would be addresses[0] and addresses[1].

I could obviously just go by checking if I specifically want "LOCATION" or "MAILING", but is there a way to do something like

if address.length() > 1

or something along those lines?

"addresses" : [
    {
      "country_code" : "",
      "country_name" : "",
      "address_purpose" : "LOCATION",
      "address_type" : "",
      "address_1" : "",
      "address_2" : "",
      "city" : "",
      "state" : "",
      "postal_code" : "",
      "telephone_number" : "",
      "fax_number" : ""
    },
    {
      "country_code" : "",
      "country_name" : "",
      "address_purpose" : "MAILING",
      "address_type" : "",
      "address_1" : "",
      "address_2" : "",
      "city" : "",
      "state" : "",
      "postal_code" : "",
      "telephone_number" : "",
      "fax_number" : ""
    }
  ],

Upvotes: 0

Views: 215

Answers (2)

Eriks Klotins
Eriks Klotins

Reputation: 4180

JSON is a data format, Javascript can parse it with JSON.parse() and create a JS object out of it.

Then, depending on how your object is structured, you can apply/call any method on it, including array.length

Upvotes: 0

LeeLenalee
LeeLenalee

Reputation: 31421

Yes, since its an array you can indeed check the length of it:

let obj = {"addresses" : [
    {
      "country_code" : "",
      "country_name" : "",
      "address_purpose" : "LOCATION",
      "address_type" : "",
      "address_1" : "",
      "address_2" : "",
      "city" : "",
      "state" : "",
      "postal_code" : "",
      "telephone_number" : "",
      "fax_number" : ""
    },
    {
      "country_code" : "",
      "country_name" : "",
      "address_purpose" : "MAILING",
      "address_type" : "",
      "address_1" : "",
      "address_2" : "",
      "city" : "",
      "state" : "",
      "postal_code" : "",
      "telephone_number" : "",
      "fax_number" : ""
    }
  ]}

console.log(obj.addresses.length > 1)

Upvotes: 1

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