What steps do I need to take to modify a JSON parser?

Question

What steps do I need to take to modify a JSON parser?

I need assistance in converting a parser to JSON for a new server response.

Previous server response:

{"names":[{"name":"Oleg","act":0,"total":0},{"name":"Vitya","act":2,"total":2}]}

Existing parser:

names = appData.filter( function(x) { return skipped.indexOf(x) < 0; })
        get("https://serv.io/set?" + names.join("|")).then(function(data) {
          result = JSON.parse(data)["names"]
          for (var i = 0; i < result.length; i++) {
            name = result[i]["name"]
            act = result[i]["act"]
            total = result[i]["total"]
          }

New server response:

{"Oleg":{"act":0,"total":0},"Vitya":{"act":2,"total":2}}

In the updated response, there is no array and the object's name matches the name. I am seeking guidance on modifying the old parser for the new server response. Your help would be greatly appreciated!

javascript json web

Answer 1

Answer №1

To extract keys from an object, you can utilize the for...in loop. Another handy technique for working with this type of data is destructuring assignment.

const result = {"Oleg":{"act":0,"total":0},"Vitya":{"act":2,"total":2}}

for (const key in result) {
  const name = key
  const {act, total} = result[key]
  
  console.log(name, act, total)
}

It's important to note that when using for..in loop, the order of elements in the extracted JSON may not be preserved.

for...in does not guarantee the order of returned indexes.

(quoted from the for..in reference mentioned above.)

If maintaining the element order is critical for your system, you should consider utilizing a different JSON parser instead of the default JSON.parse() method.

Answer 2

To extract keys from an object, you can utilize the for...in loop. Another handy technique for working with this type of data is destructuring assignment.

const result = {"Oleg":{"act":0,"total":0},"Vitya":{"act":2,"total":2}}

for (const key in result) {
  const name = key
  const {act, total} = result[key]
  
  console.log(name, act, total)
}

It's important to note that when using for..in loop, the order of elements in the extracted JSON may not be preserved.

for...in does not guarantee the order of returned indexes.

(quoted from the for..in reference mentioned above.)

If maintaining the element order is critical for your system, you should consider utilizing a different JSON parser instead of the default JSON.parse() method.

Answer 3

Answer №2

Emulating the response server:

// Simulated server response
const data = JSON.stringify({"Anna":{"act":1,"total":5},"Elena":{"act":3,"total":8}})

// Assuming that you have already declared the necessary variables
let name;
let act;
let total;

// Parsing the JSON and working with it
const result = JSON.parse(data)

// Storing this result in a variable to avoid using Object.entries repeatedly.
const names = Object.entries(result);

// Creating a new loop for processing the data
for (var i = 0; i < names.length; i++) {
  name = names[i][0];
  act = names[i][1].act;
  total = names[i][1].total
  console.log(name, act, total);
}

The following will be the output on each iteration of the loop:

Anna 1 5
Elena 3 8

Answer 4

Emulating the response server:

// Simulated server response
const data = JSON.stringify({"Anna":{"act":1,"total":5},"Elena":{"act":3,"total":8}})

// Assuming that you have already declared the necessary variables
let name;
let act;
let total;

// Parsing the JSON and working with it
const result = JSON.parse(data)

// Storing this result in a variable to avoid using Object.entries repeatedly.
const names = Object.entries(result);

// Creating a new loop for processing the data
for (var i = 0; i < names.length; i++) {
  name = names[i][0];
  act = names[i][1].act;
  total = names[i][1].total
  console.log(name, act, total);
}

The following will be the output on each iteration of the loop:

Anna 1 5
Elena 3 8

What steps do I need to take to modify a JSON parser?

Answer №1

Answer №2

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