How to extract the value from a JSON string using JavaScript

Question

How to extract the value from a JSON string using JavaScript

Check out this JSON string:

var jsonData = {
  "cdl": {
    "06A78000000YNR7EAO": {
      "attributes": {
        "type": "CDL",
        "url": "/services/data"
      },
      "CDI": "06978000000GIjCAAW",
      "LEI": "a1U78000000SUtTEAW",
      "Id": "06A78000000YNR7EAO",
      "CD": {
        "attributes": {
          "type": "CD",
          "url": "/services/data"
        },
        "Title": "photo-1517849845537-4d257902454a",
        "Id": "06978000000GIjCAAW"
      }
    },
    "06A78000000YNPGEA4": {
      "attributes": {
        "type": "CDL",
        "url": "/services/data"
      },
      "CDI": "06978000000GIhuAAG",
      "LEI": "a1U78000000SUtOEAW",
      "Id": "06A78000000YNPGEA4",
      "CD": {
        "attributes": {
          "type": "CD",
          "url": "/services/data"
        },
        "Title": "photo-1517519014922-8fc06b814a0e",
        "Id": "06978000000GIhuAAG"
      }
    }
  },
  "documents": {
    "a1U78000000SUtTEAW": {
      "attributes": {
        "type": "DR",
        "url": "/services/data"
      },
      "Id": "a1U78000000SUtTEAW",
      "Name": "test2"
    },
    "a1U78000000SUtOEAW": {
      "attributes": {
        "type": "DR",
        "url": "/services/data"
      },
      "Id": "a1U78000000SUtOEAW",
      "Name": "test"
    }
  }
}

To access the document name, use this code snippet:

console.log(Object.values(jsonData)[1]["a1U78000000SUtTEAW"]["Name"]);

Is there a way to determine the number of documents and retrieve their names without specifying "a1U78000000SUtTEAW"?

javascript json string

Answer 1

Answer №1

give these solutions a try:


  Object.keys(json.docs).forEach(k => {
      console.log("\n" + k + ": " + json.docs[k].Name);
  });

you can also attempt this:

  let docs = Object.values(json.docs);

  console.log(docs.length); //2
  console.log(docs[0].Id); // a1U78000000SUtTEAW
  console.log(docs[0].Name); // test2

Answer 2

give these solutions a try:


  Object.keys(json.docs).forEach(k => {
      console.log("\n" + k + ": " + json.docs[k].Name);
  });

you can also attempt this:

  let docs = Object.values(json.docs);

  console.log(docs.length); //2
  console.log(docs[0].Id); // a1U78000000SUtTEAW
  console.log(docs[0].Name); // test2

How to extract the value from a JSON string using JavaScript

Answer №1

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